Lightbridge Corporation Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Narrative) (Details)

Stockholders' Equity (Narrative) (Details) - USD ($)							1 Months Ended				3 Months Ended		4 Months Ended	6 Months Ended		9 Months Ended	12 Months Ended
Stockholders' Equity (Narrative) (Details) - USD ($)	Nov. 20, 2015	Sep. 04, 2015	Aug. 12, 2015	Jul. 31, 2015	Apr. 09, 2015	Apr. 08, 2015	Jul. 20, 2016	Nov. 20, 2015	May 31, 2015	Apr. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	May 12, 2016	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2015	Dec. 31, 2015	Aug. 02, 2016	Jun. 11, 2015	Dec. 31, 2014	Jul. 17, 2006
Stockholders' Equity, Reverse Stock Split							1 for 5
Common Stock, Shares Authorized											100,000,000			100,000,000			100,000,000
Common Stock, Shares, Issued and Outstanding											4,799,906			4,799,906			3,725,819
Class of Warrant or Right, Outstanding											1,272,622			1,272,622			977,355
Number of options outstanding											1,463,003			1,463,003			1,047,450			405,344
Number of options vested and expected to vest outstanding											757,383			757,383			688,452
Aggregate intrinsic value																	$ 0
Unrecognized compensation costs											$ 2,000,000			$ 2,000,000
Weighted average recognition period														2 years 7 days
Restricted stock grants estimated forfeiture amount											1.50%			1.50%
Share based compensation														$ 550,552	$ 782,036
Common Stock issued											4,799,906			4,799,906			3,725,819
Proceeds from Issuance of Common Stock														$ 2,991,487	0
Strike price														$ 6.25
Stock options granted														465,887			698,323
Fair value of stock options granted																	$ 14.55			$ 53.05
Stock options granted														465,887			698,323
Series A Preferred Stock [Member]
Equity Issuance, Per Share Amount														$ 2.75
Common stock to be purchased in the Offering											1,020,000			1,020,000
Dividend yield														7.00%
Convertible Preferred Stock Amount																		$ 2,800,000
Approximations [Member]
Stock option expense											$ 0.4	$ 700,000		$ 0.6	$ 800,000
Chief Executive Officer [Member]
Non-qualified stock options														376,769
Aspire Capital [Member]
Equity Issuance, Per Share Amount														$ 4.60
Common Stock issued											700,000			700,000
Proceeds from Issuance of Common Stock														$ 2,000,000
Volitility rate														91.00%
Risk-free interest rate														1.00%
Dividend yield														0.00%
Expected term														5 years
Stock issued for compensation for commitment, shares														60,000
Stock issued for compensation for commitment, amount														$ 276,000
Additional sale of stock amount														$ 4,000,000
Aspire Capital [Member] \| Milestone Achievement 1 [Member]
Equity Issuance, Per Share Amount														$ 2.50
Additional sale of stock amount														$ 1,000,000
Aspire Capital [Member] \| Milestone Achievement 2 [Member]
Equity Issuance, Per Share Amount														$ 5.00
Additional sale of stock amount														$ 3,000,000
Long-term Non-Qualified Stock Options [Member]
Non-qualified stock options													55,868
Equity Purchase Agreement [Member] \| Aspire Capital [Member]
Nasdaq 20% Rule		Requires shareholder approval of a transaction other than a public offering involving the sale, issuance, or potential issuance by a company of common stock (or securities convertible into or exercisable for common stock) equal to 20% or more of the common stock, or 20% or more of the voting power outstanding before the issuance for less than the greater of book or market value of the stock.
Common stock, purchase commitment amount		$ 10,000,000									$ 5,000,000			$ 5,000,000
Common stock purchase amount, per business day		20,000
Common stock purchase amount, per business day, value		$ 250,000
Percentage of aggregate shares of the Company's common stock to be purchased		30.00%
Percentage of purchase price per share, pursuant to VWAP											95.00%			95.00%
2015 Equity Incentive Plan [Member] \| Directors [Member]
Contractural lives						10 years
Expected term						5 years 6 months
Expected dividends						$ 0
2015 Short-Term Non-Qualified Option Grants [Member]
Non-qualified stock options				4,634				225,831
Lower Limit						0.25
Upper Limit						4.28
Strike Price						6.30		$ 4.60
Expected dividends						$ 0
2015 Long-Term Incentive Option Grants [Member]
Stock options granted													376,998
2015 Long-Term Incentive Option Grants [Member] \| Employees and Consultants [Member]
Contractural lives						10 years
Stock options granted			15,922
Pre-vesting forfeiture rate											1.50%			1.50%
Expected dividends						$ 0
Stock options granted	509,247					110,199
2015 Long-Term Incentive Option Grants [Member] \| Directors [Member]
Non-qualified stock options			4,608			22,600								75,468
ATM Offering [Member]
Common Stock issued											49,000			49,000
Proceeds from Issuance of Common Stock														$ 282,000
Issuance of 51,051 non-qualified 10 year options [Member]
Non-qualified stock options														51,051
Contractural lives														10 years
Lower Limit														$ 22.50
Upper Limit														$ 72.00
Issuance of 1,251,609 non-qualified 5 - 10 year options [Member]
Non-qualified stock options														1,251,609
Lower Limit														$ 2.05
Upper Limit														$ 75.00
Issuance of 160,343 non-qualified 3 - 10 year options [Member]
Non-qualified stock options														160,343
Lower Limit														$ 4.60
Upper Limit														$ 52.50
First Purchase [Member] \| Aspire Capital [Member]
Common Stock issued											371,400			371,400
Common stock and warrants sold														$ 1,000,000
Pre-funded warrants														295,267
Warrant exercise price														$ 0.05
Issued to an investor on June 28, 2016 [Member]
Class of Warrant or Right, Outstanding											295,267			295,267
Common stock to be purchased in the Offering											295,267			295,267
Strike price														$ 0.05
Minimum [Member]
Strike price														$ 6.25
Minimum [Member] \| Chief Executive Officer [Member]
Contractural lives														1 year 4 months 24 days
Minimum [Member] \| Directors, Officers and Employees [Member]
Contractural lives														1 month 6 days
Minimum [Member] \| 2015 Equity Incentive Plan [Member] \| Directors [Member]
Volitility rate						86.00%
Risk-free interest rate						1.46%
Fair value of stock options granted						$ 3.25
Minimum [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Contractural lives						3 years
Risk-free interest rate						0.42%
Dividend yield						76.00%
Expected term						1 year 6 months
Strike Price						$ 2.05										$ 4.15
Minimum [Member] \| 2015 Long-Term Incentive Option Grants [Member] \| Employees and Consultants [Member]
Volitility rate						86.00%
Risk-free interest rate						1.15%
Strike Price						$ 4.60
Fair value of stock options granted						1.28
Minimum [Member] \| 2015 Long-Term Incentive Option Grants [Member] \| Directors [Member]
Strike Price						$ 4.60
Minimum [Member] \| Issuance of 1,251,609 non-qualified 5 - 10 year options [Member]
Contractural lives														5 years
Minimum [Member] \| Issuance of 160,343 non-qualified 3 - 10 year options [Member]
Contractural lives														3 years
Minimum [Member] \| Reverse Stock Split [Member]
Common Stock, Shares Authorized																	100,000,000
Common Stock, Shares, Issued and Outstanding											4,799,906			4,799,906			3,725,819
Maximum [Member]
Strike price														$ 11.55
Maximum [Member] \| Chief Executive Officer [Member]
Contractural lives														9 years 4 months 24 days
Maximum [Member] \| Directors, Officers and Employees [Member]
Contractural lives														10 years
Maximum [Member] \| 2015 Equity Incentive Plan [Member] \| Directors [Member]
Volitility rate						87.00%
Risk-free interest rate						1.79%
Strike Price						$ 6.30
Fair value of stock options granted						$ 4.41
Maximum [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Contractural lives						10 years
Risk-free interest rate						1.76%
Dividend yield						91.00%
Expected term						5 years
Strike Price						$ 6.25										$ 6.25
Maximum [Member] \| 2015 Long-Term Incentive Option Grants [Member] \| Employees and Consultants [Member]
Volitility rate						88.00%
Risk-free interest rate						1.87%
Strike Price						$ 6.30
Fair value of stock options granted						$ 4.57
Maximum [Member] \| ATM Offering [Member]
Total fundraising limit																			$ 5,800,000
Maximum [Member] \| Issuance of 1,251,609 non-qualified 5 - 10 year options [Member]
Contractural lives														10 years
Maximum [Member] \| Issuance of 160,343 non-qualified 3 - 10 year options [Member]
Contractural lives														10 years
Maximum [Member] \| Reverse Stock Split [Member]
Common Stock, Shares Authorized											500,000,000			500,000,000
Common Stock, Shares, Issued and Outstanding											23,999,386			23,999,386			18,628,957
2006 Stock Plan [Member]
Non-qualified stock options									2,889	33,021
2006 Stock Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Non-qualified stock options					9,404
2006 Stock Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member] \| Employees and Consultants [Member]
Non-qualified stock options						92,641
2015 Equity Incentive Plan [Member]
Non-qualified stock options			27,181
Strike Price			$ 6.30
2015 Equity Incentive Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Non-qualified stock options					794
2015 Equity Incentive Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member] \| Employees and Consultants [Member]
Non-qualified stock options						29,771
2015 Equity Incentive Plan [Member] \| Minimum [Member]
Common stock reserved for issuance											800,000			800,000
2015 Equity Incentive Plan [Member] \| Maximum [Member]
Common stock reserved for issuance											1,400,000			1,400,000
Employee Stock Option [Member]
Volitility rate														84.87%			86.66%
Risk-free interest rate														0.70%			1.64%
Dividend yield														0.00%			0.00%
Expected term														1 year 10 months 10 days			5 years 4 months 17 days
Stock and Stock Equivalents [Member]
Common Stock, Shares, Issued and Outstanding											7,535,531			7,535,531			5,750,624
Stock Compensation Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance																					1,400,000
Maximum restricted shares granted [Member]
Common Stock, Capital Shares Reserved for Future Issuance																					(300,000)
Stock-based compensation [Member] \| Approximations [Member]
Share based compensation														$ 600,000			$ 800,000
Warrants [Member] \| Aspire Capital [Member]
Additional Paid in Capital, Common Stock											$ 400,000			400,000
Common Stock [Member] \| Aspire Capital [Member]
Additional Paid in Capital, Common Stock											$ 600,000			$ 600,000