Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 26,361	$ 50,517	$ 47,289
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Provision (recapture) for credit losses	18,892	2,385	(1,756)
Depreciation expense	3,238	3,203	3,309
Amortization of intangibles	846	894	985
Amortization of premiums on securities	1,836	1,194	1,091
Amortization of lease right-to-use assets	1,517	1,343
Accretion of lease liabilities	464	534
Earnings on bank-owned life insurance	(2,422)	(5,011)	(1,815)
Stock-based compensation expense	1,935	2,402	1,601
Deferred income tax provision	(3,625)	(1,657)	(734)
Net gain on sales of assets	(755)	(652)	(660)
Earnings on securities	(46)	(18)	(54)
Change in operating assets and liabilities:
Loans held for sale	(494)	(1,185)	1,921
Other assets	(11,842)	81	994
Operating lease liabilities	(2,046)	(1,895)
Other liabilities	6,502	3,955	(2,850)
Total adjustments	14,000	5,573	2,032
Net cash provided by operating activities	40,361	56,090	49,321
Cash flows from investing activities:
Purchases of securities	(677,813)	(651,908)	(495,870)
Proceeds from sales, calls and maturities of securities	603,965	625,550	462,842
Principal repayments of securities	71,606	30,726	21,962
Net increase in loans	(292,724)	(226,817)	(147,416)
Net sales of loan participations	125	29,554	10,640
Proceeds from sales of Small Business Administration loans	3,976	4,423	1,972
Net contributions to equity investments	(1,942)	(3,684)	(800)
Redemption (purchases) of bank-owned life insurance	1,965	4,655	(1,700)
Net purchases of premises and equipment	(13,565)	(2,488)	(1,293)
Proceeds from sales of repossessed real estate and other assets		141	1,054
Net decrease in time deposits in other banks			600
Proceeds from insurance claims		108	287
Net cash used in investing activities	(304,407)	(189,740)	(147,722)
Cash flows from financing activities:
Net increase in noninterest-bearing deposits	291,564	1,803	73,269
Net increase in interest-bearing deposits	157,842	84,303	90,041
Net increase in Federal Home Loan Bank advances		50,000
Net increase (decrease) in securities sold under agreements to repurchase	(485)	(2,013)	973
Redemption of trust preferred securities		(1,571)	(5,155)
Dividends paid on common stock	(9,962)	(8,757)	(4,979)
Payments to tax authorities for stock-based compensation	(198)	(239)	(171)
Proceeds from exercise of stock options	133	121	294
Repurchase of common stock	(8,905)	(3)
Net cash provided by financing activities	429,989	123,644	154,272
Net increase (decrease) in cash, cash equivalents and restricted cash	165,943	(10,006)	55,871
Cash, cash equivalents and restricted cash, beginning	372,064	382,070	326,199
Cash, cash equivalents and restricted cash, ending	$ 538,007	$ 372,064	$ 382,070