Parent Company Only Financial Statements Condensed balance sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Premises and equipment, net	$ 31,340	$ 27,352
Other assets	12,440	13,103
Total assets	2,114,499	1,607,103
Dividends payable	550	530
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	20,620	20,620
Other liabilities	6,554	6,806
Total liabilities	1,909,490	1,442,187
Stockholders’ equity	205,009	164,916	$ 149,381	$ 156,687
Total liabilities and stockholders’ equity	2,114,499	1,607,103
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash	1,660	1,729
Premises and equipment, net	2,713	2,789
Investment in subsidiaries	222,116	180,774
Other assets	950	2,248
Total assets	227,439	187,540
Dividends payable	550	550
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	20,620	20,620
Other liabilities	1,260	1,454
Total liabilities	22,430	22,624
Stockholders’ equity	205,009	164,916
Total liabilities and stockholders’ equity	$ 227,439	$ 187,540