CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended					9 Months Ended		12 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 13,071	$ 2,966	$ 15,852	$ 15,342	$ 12,597	$ 25,176	$ 41,150
Adjustments to reconcile net income to net cash from operating activities:
PROVISION FOR LOAN AND LEASE LOSSES	15,740			5,931		45,713	16,321
Impairment loss on assets held for sale						747	459
Depreciation and amortization of premises and equipment						4,849	4,701
Change in fair value of equity securities, net						(301)	(1,035)
Net amortization of securities						5,445	1,756
Net gains on sales of securities available-for-sale	(1,037)			(178)		(2,412)	(1,151)
Net loss on disposal of premises and equipment						157
Net gains on sales of assets held for sale							(82)
Net gains on sales of loans	(12,671)			(9,405)		(23,900)	(23,110)
Originations of U.S. government guaranteed loans						(301,177)	(226,465)
Proceeds from U.S. government guaranteed loans sold						232,251	229,617
Accretion of premiums and discounts on acquired loans, net						(10,754)	(17,771)
Net change in servicing assets						(1,796)	(246)
Net valuation adjustments on other real estate owned	278			26		1,043	189
Net gains on sales of other real estate owned	41			(38)		(44)	(11)
Other intangible assets amortization expense	1,947			2,003		5,732	5,735
Amortization of time deposit premium						(56)	(145)
Amortization of subordinated notes issuance cost						41
Accretion of junior subordinated debentures discount						385	439
Share-based compensation expense						2,011	1,058
Deferred tax provision, net of valuation						2,643	2,366
Increase in cash surrender value of bank owned life insurance						(202)	(253)
Loss on redemption of junior subordinated debentures						112
Changes in assets and liabilities:
Accrued interest receivable						(3,052)	(2,826)
Other assets						(109)	(13,788)
Accrued interest payable						(1,153)	1,213
Accrued expenses and other liabilities						21,705	(5,955)
Net cash provided by operating activities						3,054	12,166
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of securities available-for-sale						(742,303)	(310,950)
Proceeds from maturities and calls of securities available-for-sale						173,581	76,800
Proceeds from paydowns of securities available-for-sale						189,913	69,255
Proceeds from sales of securities available-for-sale						80,509	92,103
Purchases of Federal Home Loan Bank stock						(52,585)	(28,170)
Federal Home Loan Bank stock repurchases						65,060	23,455
Proceeds from other loans sold							710
Net change in loans and leases						(596,536)	(64,290)
Purchases of premises and equipment						(4,148)	(2,291)
Proceeds from sales of premises and equipment						32
Proceeds from sales of assets held for sale							1,373
Proceeds from sales of other real estate owned						874	1,619
Net cash received in acquisition of business							4,306
Proceeds from bank owned life insurance death benefit						69
Net cash used in investing activities						(885,534)	(136,080)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits						662,724	40,372
Proceeds from short-term borrowings						6,407,800	6,364,280
Repayments of short-term borrowings						(6,682,800)	(6,294,235)
Proceeds from Paycheck Protection Program Liquidity Facility (PPPFL) advances						449,889
Repayments of PPPLF advances						(279)
Proceeds from subordinated notes, net						73,258
Repayments of junior subordinated debentures						(1,500)
Net decrease in securities sold under agreements to repurchase						(3,688)	(1,876)
Dividends paid on preferred stock						(587)	(587)
Dividends paid on common stock						(3,412)
Proceeds from issuance of common stock upon exercise of stock options						2,548	2,359
Proceeds from issuance of common stock						537	580
Repurchases of common stock						(1,668)
Net cash provided by financing activities						902,822	110,893
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS						20,341	(13,021)
CASH AND CASH EQUIVALENTS, beginning of period		$ 80,737	108,839		$ 121,860	80,737	121,860	$ 121,860
CASH AND CASH EQUIVALENTS, end of period	$ 101,078		$ 80,737	$ 108,839		101,078	108,839	$ 80,737
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest						21,130	35,021
Cash paid during the period for taxes						7,697	16,090
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Transfer of securities from held-to-maturity to available-for-sale							94,837
Reclassification of equity and other securities							6,609
Delayed payments of mortgage-backed securities						492	720
Due from counterparties						82,980	47,045
Total assets acquired from acquisition							323,914
Value ascribed to goodwill							17,461
Total liabilities assumed from acquisition							305,892
Common stock issued due to acquisition of business							$ 29,320
Common dividend declared, not paid						$ 1,196