EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Income
Net income attributable to common shareholders	$ 9,660	$ 7,754	$ 17,323	$ 13,979
Net income attributable to common shareholders and assumed conversions	$ 9,660	$ 7,754	$ 17,323	$ 13,979
Weighted Average Shares
Net income available to common shareholders (in shares)	21,668,171	20,450,885	21,679,856	20,442,131
Effect of dilutive warrants (in shares)	151,965	62,978	141,609	64,488
Effect of dilutive stock options (in shares)	102,157	64,419	98,677	64,995
Net income attributable to common shareholders and assumed conversions (in shares)	21,922,293	20,578,282	21,920,142	20,571,614
Earnings per Common Share
Net income attributable to common shareholders (in dollars per share)	$ 0.45	$ 0.38	$ 0.80	$ 0.68
Net income attributable to common shareholders and assumed conversions (in dollars per share)	$ 0.44	$ 0.38	$ 0.79	$ 0.68
Stock options
Anti-dilutive securities
Common shares not considered in computing diluted earnings per share	3,400	178,896	14,671	182,513