CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Operating Activities
Net Income	$ 14,273,000	$ 12,820,000
Adjustments to reconcile net income to net cash (used by) provided by operating activities:
Originations of mortgage loans held for sale	(32,405,000)	(46,641,000)
Proceeds from the sale of mortgage loans	28,834,000	46,426,000
Gain on sale of mortgage loans, net of origination costs	(826,000)	(1,220,000)
Depreciation and amortization expense	922,000	940,000
Investment securities amortization and accretion, net	660,000	763,000
Purchase accounting accretion, net	(477,000)	(514,000)
Stock-based compensation expense	458,000	431,000
Provision (credit) for credit losses	744,000	(497,000)	$ 847,000
Amortization of intangible assets	176,000	181,000
Increase in other assets	(10,710,000)	(2,850,000)
(Decrease) increase in other liabilities	(6,291,000)	7,218,000
Net cash (used by) provided by operating activities	(4,642,000)	17,057,000
Investing Activities
Proceeds from sales and maturities of available-for-sale securities	26,355,000	29,531,000
Purchase of available-for-sale securities	(26,749,000)	(50,152,000)
Proceeds from maturities of held-to-maturity securities	0	750,000
Net increase in loans	(16,734,000)	(7,008,000)
Purchase of Federal Home Loan Bank stock	(2,012,000)	(2,815,000)
Proceeds from sale of Federal Home Loan Bank stock	5,691,000	3,472,000
Purchase of premises and equipment	1,583,000	595,000
Proceeds from other investments	0	205,000
Recoveries of previously charged-off loans	75,000	122,000
Net cash used by investing activities	(14,957,000)	(26,490,000)
Financing Activities
Net increase in deposits	113,740,000	25,126,000
Net (repayments of) proceeds from borrowings less than 90 days	(14,687,000)	10,816,000
Payments for Repurchase of Common Stock	(1,957,000)	0
Exercise of stock options and issuance of restricted stock, net of repurchase for tax withholdings	(215,000)	(475,000)
Cash dividends paid on common stock	4,687,000	3,896,000
Finance Lease, Principal Payments	(26,000)	0
Net cash provided by financing activities	92,168,000	31,571,000
Net increase in cash, cash equivalents and restricted cash	72,569,000	22,138,000
Cash, cash equivalents, and restricted cash at beginning of period	66,999,000	102,971,000	102,971,000
Cash, cash equivalents and restricted cash at end of period	139,568,000	125,109,000	$ 66,999,000
Supplemental information
Interest paid	9,738,000	6,384,000
Unsettled common stock repurchase	349,000	0
Income taxes paid	91,000	69,000
Real Estate Owned, Transfer to Real Estate Owned	$ 543,000	$ 0