Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Tax effect of net unrealized loss on securities available for sale reflected in stockholders’ equity	$ 11,148	$ 8,320
Tax effect of net unrealized loss on derivatives reflected in stockholders’ equity	0	60
Allowance for loan losses	16,682	14,221
Deferred compensation	7,042	4,240
Organization and acquisitions costs	319	369
Net operating loss carryforwards	14,495	16,580
Non-accrual loan interest	863	710
OREO write-downs	1,469	1,835
Rehab tax credit projects	5,254	4,303
Mortgage repurchase obligation	69	68
Other	1,892	1,974
Gross deferred tax assets	59,233	52,680
Valuation allowance	(12,125)	(10,493)
Gross deferred tax assets	47,108	42,187
Deferred tax liabilities:
Tax effect of net unrealized gain on derivatives reflected in stockholders’ equity	160	0
Securities	(2,332)	(478)
Premises, furniture and equipment	(6,514)	(5,798)
Tax bad debt reserves	(427)	(428)
Purchase accounting	(6,339)	(4,417)
Prepaid expenses	(203)	(526)
Mortgage servicing rights	(7,933)	(7,045)
Deferred loan fees	(3,321)	(2,651)
Other	(380)	(255)
Gross deferred tax liabilities	(27,609)	(21,598)
Net deferred tax asset	$ 19,499	$ 20,589