Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING ACTIVITIES:
Net income	$ 36,119,000	$ 23,644,000	$ 23,653,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	181,000	7,000,000	2,100,000
Net amortization of purchase premiums and discounts on securities	209,000	241,000	189,000
Depreciation and amortization	1,609,000	1,909,000	1,619,000
SBA PPP deferred fees and costs	(1,464,000)	2,947,000
Deferred income tax benefit	(1,456,000)	(3,090,000)	(299,000)
Net security gains	(46,000)	(322,000)	(52,000)
Stock compensation expense	1,617,000	1,412,000	1,271,000
Gain on sale of OREO		(68,000)	(16,000)
Valuation writedowns on OREO	0	225,000	0
Gain on sale of mortgage loans, net	(4,567,000)	(5,594,000)	(2,143,000)
Gain on sale of SBA loans held for sale, net	(741,000)	(1,642,000)	(909,000)
Origination of mortgage loans sold	(286,408,000)	(290,808,000)	(120,173,000)
Origination of SBA loans held for sale	(20,108,000)	(13,998,000)	(10,246,000)
Proceeds from sale of mortgage loans, net	290,975,000	296,402,000	122,316,000
Proceeds from sale of SBA loans held for sale, net	6,466,000	19,826,000	15,768,000
BOLI income	(689,000)	(613,000)	(588,000)
Gain on sale of premises and equipment	4,000	0	(766,000)
Net change in other assets and liabilities	1,753,000	(3,726,000)	1,480,000
Net cash provided by operating activities	23,454,000	33,745,000	33,204,000
INVESTING ACTIVITIES
Purchases of securities held to maturity	(21,923,000)
Purchase of equity securities	(6,100,000)	0	0
Purchases of securities available for sale	(30,301,000)	(3,802,000)	(13,084,000)
Purchases of FHLB stock, at cost	(39,036,000)	(76,915,000)	(90,644,000)
Maturities and principal payments on securities held to maturity	7,643,000		633,000
Maturities and principal payments on debt securities available for sale	12,571,000	15,205,000	5,441,000
Proceeds from sales of securities available for sale	7,048,000	6,635,000	5,606,000
Proceeds from sales of equity securities	53,000	111,000	198,000
Proceeds from redemption of FHLB stock	46,080,000	80,505,000	87,255,000
Proceeds from sale of OREO		1,566,000	269,000
Net decrease (increase) in SBA PPP loans	73,208,000	(121,182,000)
Net increase in loans	(80,029,000)	(88,770,000)	(128,876,000)
Proceeds from BOLI	595,000	422,000	0
Purchase of BOLI	0	0	(1,025,000)
Proceeds from sale of premises and equipment	20,000	0	1,821,000
Purchases of premises and equipment	(1,269,000)	(559,000)	(709,000)
Net cash used in investing activities	(31,440,000)	(186,784,000)	(133,115,000)
FINANCING ACTIVITIES
Net increase in deposits	200,922,000	307,845,000	42,427,000
Proceeds from new borrowings		160,000,000	283,000,000
Repayments of borrowings	(160,000,000)	(243,000,000)	(210,000,000)
Proceeds from exercise of stock options	630,302	451,420	453,326
Fair market value of shares withheld to cover employee tax liability	(251,000)	(222,000)	(213,000)
Dividends on common stock	(3,617,000)	(3,298,000)	(3,255,000)
Purchase of treasury stock	(4,191,000)	(7,442,000)
Net cash provided by financing activities	33,493,000	214,334,000	112,412,000
Increase in cash and cash equivalents	25,507,000	61,295,000	12,501,000
Cash and cash equivalents, beginning of period	219,311,000	158,016,000	145,515,000
Cash and cash equivalents, end of period	244,818,000	219,311,000	158,016,000
SUPPLEMENTAL DISCLOSURES
Interest paid	7,860,000	14,687,000	18,006,000
Income taxes paid	13,990,000	11,112,000	8,222,000
Noncash investing activities:
Transfer of securities held to maturity to available for sale	0	0	14,221,000
Establishment of lease liability and right-of-use asset	3,138,000	28,000	3,234,000
Transfer of SBA loans held for sale to held to maturity	0	2,633,000	0
Capitalization of servicing rights	$ 126,000	$ 722,000	643,000
Transfer of loans to OREO			$ 2,151,000