Earnings Per Share - Basic and Diluted Earnings per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Net income - Basic and Diluted	$ 12,018	$ 7,765
Weighted average common shares outstanding - Basic	53,948	48,582
Assumed conversions:
Incremental common shares from warrants	486	1,411
Incremental common shares from stock options	949	1,142
Incremental common shares from restricted stock units	15	87
Weighted average common shares outstanding - Diluted	55,398	51,222
Basic earnings per common share	$ 0.22	$ 0.16
Diluted earnings per common share	$ 0.22	$ 0.15