CONSOLIDATED STATEMENTS OF CASH FLOWS - (UNAUDITED) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Operating activities
Net income	$ 6,748,000	$ 10,380,000
Adjustments to reconcile net income to net cash from Operating activities:
Depreciation and amortization of premises, and equipment	522,000	481,000
Net accretion of securities, loans, deposits, and other	(873,000)	(964,000)
Unrealized gain on equity securities		(147,000)
Amortization of investment in affordable housing tax credits	247,000	225,000
Amortization of intangible assets	1,441,000	1,187,000
Provision for loan losses	1,945,000	550,000	$ 2,390,000
Stock-based compensation	161,000	231,000
Deferred tax benefit (expense)	1,503,000	(31,000)
Gain on sale of loans	(2,711,000)	(2,198,000)
Increase in cash surrender value of life insurance	(191,000)	(191,000)
Loans originated and purchased for sale	(30,423,000)	(41,348,000)
Proceeds from loans sold	104,273,000	144,272,000
Other items	(4,442,000)	(663,000)
Net cash provided by operating activities	78,200,000	111,784,000
Investing activities
Increase in interest-earning deposits		(596,000)
Securities available for sale:
Purchases	(151,163,000)
Maturities, prepayments and calls	151,707,000	16,185,000
Securities held to maturity:
Maturities, prepayments and calls	500,000	500,000
Redemption of Federal Home Loan Bank stock		1,751,000
Purchase of Federal Home Loan Bank stock and other equity securities, net	(621,000)	(1,007,000)
Purchase of investment in qualified affordable housing projects	(2,004,000)
Net increase in loans	(45,668,000)	(20,438,000)
Net cash received in connection with acquisition	6,634,000
Purchases of premises and equipment	(135,000)	(484,000)
Net cash used in investing activities	(40,750,000)	(4,089,000)
Financing activities
Net decrease in demand deposits and savings accounts	(108,420,000)	(118,098,000)
Net increase in time deposits	107,130,000	158,400,000
Net decrease in short-term FHLB advances		(44,500,000)
Net increase in long-term FHLB advances	150,000,000
Cash dividends paid	(2,414,000)	(2,007,000)
Common stock repurchased, net of repurchased costs	(5,254,000)
Exercise of stock options	712,000	904,000	2,800,000
Net cash provided by (used in) financing activities	141,754,000	(5,301,000)
Net increase in cash and cash equivalents	179,204,000	102,394,000
Cash and cash equivalents at beginning of period	181,763,000	147,685,000	147,685,000
Cash and cash equivalents at end of period	360,967,000	250,079,000	$ 181,763,000
Cash paid during the period:
Interest paid	8,643,000	2,350,000
Non-cash investing and financing activities:
Transfer from loans to other real estate owned		955,000
Transfer of loans to held for sale, net	15,041,000	33,633,000
Loan to facilitate OREO	1,025,000	412,000
Net change in unrealized holding gain on securities available for sale	350,000	$ 674,000
Additions to servicing assets	827,000
Acquisition:
Assets acquired, net of cash received	183,524,000
Liabilities assumed	201,385,000
Cash considerations	32,885,000
Goodwill	$ 11,227,000