Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Weighted Average Remaining Contractual Life - Years 3 years 9 months 4 days 4 years  
Number of options outstanding 1,564,257 1,564,257 1,639,842
Weighted Average Exercise Price Stock Options Outstanding $ 11.16 $ 11.16 $ 11.46
Number of Awards Vested 1,558,103 1,530,200  
Weighted Average Exercise Price $ 11.18 $ 11.28  
Weighted Average Remaining Contractual Life of Stock Options Vested 3 years 8 months 26 days 3 years 11 months 8 days  
Range 1 [Member]
      
Exercise price lower range limit $ 4.50 $ 4.50  
Exercise price upper range limit $ 8.70 $ 8.70  
Weighted Average Remaining Contractual Life - Years 5 years 11 days 5 years 3 months 11 days  
Number of options outstanding 835,884 835,884  
Weighted Average Exercise Price Stock Options Outstanding $ 6.33 $ 6.33  
Number of Awards Vested 829,730 801,827  
Weighted Average Exercise Price $ 6.34 $ 6.36  
Weighted Average Remaining Contractual Life of Stock Options Vested 5 years 7 days 5 years 2 months 16 days  
Range 2 [Member]
      
Exercise price lower range limit $ 9.00 $ 9.00  
Exercise price upper range limit $ 12.90 $ 12.90  
Weighted Average Remaining Contractual Life - Years 3 years 8 months 12 days 3 years 11 months 12 days  
Number of options outstanding 130,037 130,037  
Weighted Average Exercise Price Stock Options Outstanding $ 10.46 $ 10.46  
Number of Awards Vested 130,037 130,037  
Weighted Average Exercise Price $ 10.46 $ 10.46  
Weighted Average Remaining Contractual Life of Stock Options Vested 3 years 8 months 12 days 3 years 11 months 12 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 Contractual Life - Years 2 years 22 days 2 years 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 2 years 22 days 2 years 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 Contractual Life - Years 1 year 10 months 17 days 2 years 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 1 year 10 months 17 days 2 years 1 month 13 days