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 ($)						1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
Stockholders' Equity (Narrative) (Details) - USD ($)	Apr. 09, 2015	Apr. 08, 2015	Nov. 12, 2014	Sep. 03, 2014	May. 05, 2014	May. 31, 2015	Apr. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Common Stock, Shares Authorized								500,000,000	500,000,000	500,000,000	500,000,000	500,000,000
Common Stock, Shares, Outstanding								18,082,874	15,071,536	18,082,874	15,071,536	18,082,874
Class of Warrant or Right, Outstanding								4,886,764	2,284,996	4,886,764	2,284,996
Number of options outstanding								3,245,213	2,143,686	3,245,213	2,143,686	2,026,564	1,564,257
Number of options vested and expected to vest outstanding								2,312,149		2,312,149		1,564,257
Aggregate intrinsic value								$ 0		$ 0		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Intrinsic Value								$ 1.12		$ 1.12		$ 1.55
Restricted stock grants estimated forfeiture amount								1.50%		1.50%
Share based compensation										$ 782,036	$ 125,297
Common Stock issued								18,082,874		18,082,874		18,082,874
Amount allocated from the Offering to warrants										$ 0			$ 4,416,000
Volitility rate										86.78%		90.44%
Risk-free interest rate										1.46%		1.68%
Dividend yield										0.00%		0.00%
Expected term										5 years 6 months		5 years
Stock options granted										1,333,056		579,429
Fair value of stock options granted												$ 10.61	$ 10.61
Approximations [Member]
Stock option expense								$ 700,000	$ 65,000	$ 782,000	105,000
Share based compensation								$ 800,000	$ 100,000	$ 100,000	$ 100,000
Chief Executive Officer [Member]
Non-qualified stock options										1,198,526
Issuance of 2,731,900 non-qualified 5-10 year options [Member]
Non-qualified stock options										2,731,900
Lower Limit										$ 1.12
Upper Limit										$ 23.85
Issuance of 258,111 non-qualified 5-10 year options [Member]
Non-qualified stock options										258,111
Lower Limit										$ 1.26
Upper Limit										$ 15.30
November 12, 2014 Offering [Member]
Proceeds from Issuance of Common Stock			$ 5,000,000
Common stock and warrants sold			$ 2,878,516
Common stock to be purchased in the Offering			2,734,590
Shares of common stock to be purchased by fixed combination			0.95
Purchase price of fixed combination			$ 1.75
Warrant exercise price			$ 2.31
November 12, 2014 Offering [Member] \| Approximations [Member]
Net proceeds from the Offering received after payments of fees and expenses			$ 4,500,000
Issued to Investors on July 28, 2010 [Member]
Class of Warrant or Right, Outstanding								1,034,996	1,034,996	1,034,996	1,034,996
Common stock to be purchased in the Offering								1,034,996		1,034,996
Warrant exercise price										$ 9.00
Issued to Investors on October 25, 2013 [Member]
Class of Warrant or Right, Outstanding								1,117,178	1,250,000	1,117,178	1,250,000
Common stock to be purchased in the Offering								1,250,000		1,250,000
Warrant exercise price										$ 2.30
Issued to Investors on November 17, 2014 [Member]
Class of Warrant or Right, Outstanding								2,734,590	0	2,734,590	0
Common stock to be purchased in the Offering								2,734,590		2,734,590
Warrant exercise price										$ 2.31
2015 Equity Incentive Plan [Member]
Common Stock, Shares Authorized								3,000,000		3,000,000
Shares of Common Stock limit on stock options										(250,000)
2015 Equity Incentive Plan [Member] \| Directors [Member]
Contractural lives		10 years
Volitility rate		86.00%
Risk-free interest rate		1.46%
Expected term		5 years 6 months
Strike Price		$ 1.26
Fair value of stock options granted		$ 0.88						$ 0.81		$ 0.81
Pre-vesting forfeiture rate		1.50%
Expected dividends		$ 0
2015 Short-Term Non-Qualified Option Grants [Member]
Non-qualified stock options						1,775	2,981			1,310
Contractural lives		10 years
Lower Limit		$ 0.76
Upper Limit		$ 0.86
Expected term		5 years
Strike Price		$ 1.26
Expected dividends		$ 0
2015 Long-Term Incentive Option Grants [Member] \| Employees and Consultants [Member]
Contractural lives		10 years
Volitility rate		87.00%
Risk-free interest rate		1.55%
Expected term		6 years
Strike Price		$ 1.26
Fair value of stock options granted		$ 0.91
Pre-vesting forfeiture rate		1.50%
Expected dividends		$ 0
Stock options granted		550,972
2015 Long-Term Incentive Option Grants [Member] \| Directors [Member]
Non-qualified stock options		112,996
Issuance of 255,202 non-qualified 10 year options [Member]
Non-qualified stock options										255,202
Contractural lives										10 years
Lower Limit										$ 4.50
Upper Limit										$ 14.40
Registered Direct Offering and Outstanding Warrants [Member]
Equity Issuance, Per Share Amount				$ 2.30
Common Stock issued				132,822
Proceeds from Issuance of Common Stock				$ 306,000
May 5, 2014 Stock Options Granted [Member]
Volitility rate					90.44%
Risk-free interest rate					1.68%
Dividend yield					0.00%
Expected term					5 years
Strike Price					$ 2.55
Stock options granted					579,429
Fair value of stock options granted					$ 1.79
Fair market value on measurement date					$ 0.58
Pre-vesting forfeiture rate					1.50%
Minimum [Member] \| Chief Executive Officer [Member]
Contractural lives										4 months 24 days
Minimum [Member] \| Directors, Officers and Employees [Member]
Contractural lives										1 year 1 month 6 days
Minimum [Member] \| Issuance of 2,731,900 non-qualified 5-10 year options [Member]
Contractural lives										10 years
Minimum [Member] \| Issuance of 258,111 non-qualified 5-10 year options [Member]
Contractural lives										10 years
Minimum [Member] \| November 12, 2014 Offering [Member]
Maximum common stock ownership to be eligible for exercise of warrants			4.99%
Minimum [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Risk-free interest rate		1.37%
Dividend yield		86.00%
Strike Price		$ 1.12
Maximum [Member] \| Chief Executive Officer [Member]
Contractural lives										9 years 9 months 18 days
Maximum [Member] \| Directors, Officers and Employees [Member]
Contractural lives										10 years
Maximum [Member] \| Issuance of 2,731,900 non-qualified 5-10 year options [Member]
Contractural lives										5 years
Maximum [Member] \| Issuance of 258,111 non-qualified 5-10 year options [Member]
Contractural lives										5 years
Maximum [Member] \| November 12, 2014 Offering [Member]
Maximum common stock ownership to be eligible for exercise of warrants			19.99%
Maximum [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Risk-free interest rate		1.63%
Dividend yield		88.00%
Strike Price		$ 1.23
Stock and Stock Equivalents [Member]
Common Stock, Shares, Outstanding								26,214,851	19,500,218	26,214,851	19,500,218
Stock-based compensation [Member] \| Approximations [Member]
Share based compensation								$ 700,000	$ 100,000	$ 800,000	$ 100,000
2006 Stock Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Non-qualified stock options	47,017
2006 Stock Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member] \| Employees and Consultants [Member]
Non-qualified stock options		463,192
2015 Equity Incentive Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member]
Non-qualified stock options	3,968
2015 Equity Incentive Plan [Member] \| 2015 Short-Term Non-Qualified Option Grants [Member] \| Employees and Consultants [Member]
Non-qualified stock options		148,845