Quarterly report pursuant to Section 13 or 15(d)

Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details)

v3.3.0.814
Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Weighted Average Remaining Contractural Life - Years 2 years 11 months 26 days 3 years 3 months 22 days
Number of options outstanding 1,912,157 2,026,564
Weighted Average Exercise Price Stock Options Outstanding $ 9.35 $ 9.19
Number of Awards Vested 1,449,850 1,564,257
Weighted Average Exercise Price $ 11.52 $ 11.16
Weighted Average Remaining Contractual Life of Stock Options Vested 2 years 7 months 20 days 3 years
Range 1 [Member]    
Exercise price lower range limit $ 2.55 $ 2.55
Exercise price upper range limit $ 5.00 $ 5.00
Weighted Average Remaining Contractural Life - Years 4 years 4 days 4 years 3 months 4 days
Number of options outstanding 645,644 645,644
Weighted Average Exercise Price Stock Options Outstanding $ 3.10 $ 3.10
Number of Awards Vested 183,337 183,337
Weighted Average Exercise Price $ 4.50 $ 4.50
Weighted Average Remaining Contractual Life of Stock Options Vested 3 years 9 months 22 days 4 years 22 days
Range 2 [Member]    
Exercise price lower range limit $ 5.01 $ 5.01
Exercise price upper range limit $ 12.90 $ 12.90
Weighted Average Remaining Contractural Life - Years 3 years 9 months 18 days 4 years 1 month 10 days
Number of options outstanding 668,177 782,584
Weighted Average Exercise Price Stock Options Outstanding $ 7.59 $ 7.45
Number of Awards Vested 668,177 782,584
Weighted Average Exercise Price $ 7.59 $ 7.45
Weighted Average Remaining Contractual Life of Stock Options Vested 3 years 9 months 18 days 4 years 1 month 10 days
Range 3 [Member]    
Exercise price lower range limit $ 13.50 $ 13.50
Exercise price upper range limit $ 18.90 $ 18.90
Weighted Average Remaining Contractural Life - Years 1 year 22 days 1 year 3 months 18 days
Number of options outstanding 358,336 358,336
Weighted Average Exercise Price Stock Options Outstanding $ 14.17 $ 14.17
Number of Awards Vested 358,336 358,336
Weighted Average Exercise Price $ 14.17 $ 14.17
Weighted Average Remaining Contractual Life of Stock Options Vested 1 year 22 days 1 year 3 months 18 days
Range 4 [Member]    
Exercise price lower range limit $ 19.20 $ 19.20
Exercise price upper range limit $ 23.85 $ 23.85
Weighted Average Remaining Contractural Life - Years 10 months 17 days 1 year 1 month 13 days
Number of options outstanding 240,000 240,000
Weighted Average Exercise Price Stock Options Outstanding $ 23.85 $ 23.85
Number of Awards Vested 240,000 240,000
Weighted Average Exercise Price $ 23.85 $ 23.85
Weighted Average Remaining Contractual Life of Stock Options Vested 10 months 17 days 1 year 1 month 13 days