PARENT COMPANY - Statements of Cash Flows (Details) - 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:
Stock-based compensation expense	1,935	2,402	1,601
Deferred tax benefit (provision)	3,625	1,657	734
Change in operating assets and liabilities:
Other assets	(11,842)	81	994
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:
Cash flows from investing activities:	(304,407)	(189,740)	(147,722)
Cash flows from financing activities:
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
Parent
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:
Equity in undistributed net income loss of subsidiary	(17,717)	(42,836)	(41,035)
Stock-based compensation expense	1,935	2,402	1,601
Deferred tax benefit (provision)	1	14	(4)
Change in operating assets and liabilities:
Other assets	(110)	473	1,549
Other liabilities	(23)	(180)	(836)
Total adjustments	(15,914)	(40,127)	(38,725)
Net cash provided by operating activities	10,447	10,390	8,564
Cash flows from financing activities:
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	(18,932)	(10,449)	(10,011)
Net increase (decrease) in cash, cash equivalents and restricted cash	(8,485)	(59)	(1,447)
Cash and cash equivalents, beginning	44,130	44,189	45,636
Cash and cash equivalents, ending	$ 35,645	$ 44,130	$ 44,189