EARNINGS PER SHARE - Reconciliation of weighted average shares outstanding (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
EARNINGS PER SHARE
Net income available for stockholders	$ 3,103	$ 1,882	$ 10,461	$ 6,873
Less: Dividends paid	(1,525)	(1,144)	(4,588)	(3,435)
Undistributed earnings	$ 1,578	$ 738	$ 5,873	$ 3,438
Basic shares outstanding:
Common stock	35,634	35,642	35,731	35,710
Restricted shares of common stock	1,255	1,262	1,251	1,240
Basic shares outstanding, Total	36,889	36,904	36,982	36,950
Diluted shares outstanding:
Common stock	35,634	35,642	35,731	35,710
Dilutive effect of stock based awards	91	286	181	286
Diluted shares outstanding excluding restricted shares of common stock, Total	35,725	35,928	35,912	35,996
Restricted shares of common stock	1,255	1,262	1,251	1,240
Diluted shares outstanding, Total	36,980	37,190	37,163	37,236