EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income
Net income attributable to common shareholders	$ 9,111	$ 8,457	$ 26,434	$ 22,436
Net income attributable to common shareholders and assumed conversions	$ 9,111	$ 8,457	$ 26,434	$ 22,436
Weighted Average Shares
Net income available to common shareholders (in shares)	21,615,263	20,459,709	21,658,088	20,448,054
Effect of dilutive warrants (in shares)	171,062	72,978	152,171	67,184
Effect of dilutive stock options (in shares)	110,636	68,757	103,053	66,102
Net income attributable to common shareholders and assumed conversions (in shares)	21,896,961	20,601,444	21,913,312	20,581,340
Earnings per Common Share
Net income attributable to common shareholders (in dollars per share)	$ 0.42	$ 0.41	$ 1.22	$ 1.10
Net income attributable to common shareholders and assumed conversions (in dollars per share)	$ 0.42	$ 0.41	$ 1.21	$ 1.09
Stock options
Anti-dilutive securities
Common shares not considered in computing diluted earnings per share	0	123,964	10,210	176,211