PARENT COMPANY - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements
Other assets	$ 15,128	$ 22,294
Total assets	2,062,658	2,021,237
Other liabilities	2,297	9,248
Stockholders' equity	156,503	148,054	$ 125,821	$ 119,611
Total liabilities and stockholders' equity	2,062,658	2,021,237
Carrying Amount
Condensed Financial Statements
Total assets	2,014,315	1,964,806
Parent Company
Condensed Financial Statements
Investment in subsidiaries	173,909	167,164
Cash	2,424	1,554
Other assets	1,911	1,009
Total assets	178,244	169,727
Other liabilities	1,122	1,054
Long term debt	20,619	20,619
Stockholders' equity	156,503	148,054
Total liabilities and stockholders' equity	$ 178,244	$ 169,727