PREFERRED STOCK AND STOCK REPURCHASE - Transactions with the U.S. Department of the Treasury (Details) - USD ($) $ / shares in Units, $ in Thousands						12 Months Ended
	Aug. 12, 2013	Dec. 05, 2012	May. 31, 2012	Mar. 28, 2012	Jan. 16, 2009	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Preferred stock and stock repurchase
Shares issued to the Treasury Department						0	0
Total price
Additional dilutive shares in calculating earnings per share						163,011	76,828	0
Liquidation value of additional purchased shares						$ 0	$ 0
Preferred stock, Outstanding shares						0	0
Preferred stock series A
Preferred stock and stock repurchase
Shares issued to the Treasury Department					57,000
Liquidation amount per share (in dollars per share)					$ 1,000
Total price					$ 57,000
Shares of the Company's Preferred Stock priced by the U.S. Department of the Treasury in its secondary public offering				57,000
Shares repurchased and retired as a result of successful bid in the offering	15,100	19,050	1,820	21,030
Liquidation value of additional purchased shares		$ 19,050	$ 1,820
Total purchase price of shares repurchased	$ 15,100	18,927	1,747	$ 19,581
Book value of preferred stock retired	$ 14,952			20,823
Difference between the book value and the bid price credited (charged) to retained earnings		$ 55	$ 60	$ 1,242
Shares purchased by unrelated third party				35,970
Common stock
Preferred stock and stock repurchase
Warrant, exercise price (in dollars per share)					$ 14.95	$ 14.95
Warrant, term					10 years
Average stock price (in dollars per share)						$ 20.91	$ 17.27	$ 14.58
Common stock | Maximum
Preferred stock and stock repurchase
Warrant issued to purchase the entity's common stock (in shares)					571,906