PREFERRED STOCK AND STOCK REPURCHASE - Transactions with the U.S. Department of the Treasury (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 16, 2009	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 31, 2009
Preferred stock and stock repurchase
Shares issued to the Treasury Department		0	0
Total price
Additional dilutive shares in calculating earnings per share		210,638	163,011	76,828
Liquidation value of additional purchased shares		$ 0
Preferred stock, Outstanding shares		0	0
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)		$ 23.64	$ 20.91	$ 17.27
Common Stock | Maximum
Preferred stock and stock repurchase
Warrant issued to purchase the entity's common stock (in shares)	571,906
Dividends					$ 0.145