Net Income Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Basic net income per share:	$ 13,620	$ 11,865
Less: Preferred Stock dividends and discount accretion		(857)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	13,620	11,008
Effect of dilutive stock options and warrants
Net income available to common stockholders (in shares)	35,956,436	28,716,987
Effect of dilutive stock options and warrants (in shares)	304,188	254,251
Net income available to common stockholders (in dollars per share)	$ 0.38	$ 0.38
Diluted net income per share:
Net income available to common stockholders	$ 13,620	$ 11,008
Net income available to common stockholders (in shares)	36,260,624	28,971,238
Net income available to common stockholders (in dollars per share)	$ 0.38	$ 0.38