Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest and dividend income
Loans, including fees	$ 62,019	$ 63,642	$ 80,287	$ 191,195	$ 260,004
Securities	6,766	7,816	10,024	22,402	40,322
Other interest-earning assets	881	1,239	2,346	3,480	7,083
Total interest and dividend income	69,666	72,697	92,657	217,077	307,409
Interest expense
Deposits	7,564	10,205	22,811	32,380	82,852
Federal Home Loan Bank advances	3,860	4,818	8,519	14,561	25,889
Securities sold under repurchase agreements	2	2	13	4	47
Long-term debt and other interest-bearing liabilities	2,385	2,357	2,399	7,101	7,118
Total interest expense	13,811	17,382	33,742	54,046	115,906
Net interest income	55,855	55,315	58,915	163,031	191,503
Provision for credit losses	1,141	11,826	38,607	28,728	38,805
Net interest income after provision for credit losses	54,714	43,489	20,308	134,303	152,698
Noninterest income
Customer service fees	1,498	1,224	1,582	3,818	4,531
Loan servicing income	186	95	128	356	367
Income from bank owned life insurance	629	591	588	1,798	1,693
Impairment loss on investment securities	0	0	(731)	0	(731)
Net gain (loss) on sale of securities available-for-sale	0	2,011	(5,063)	2,011	(4,855)
Fair value adjustment for loans held-for-sale	24	25	16	(1,537)	76
Net gain on sale of loans	272	0	4,310	245	8,629
Other income (loss)	1,345	1,582	2,351	4,852	(2,524)
Total noninterest income	3,954	5,528	3,181	11,543	7,186
Noninterest expense
Salaries and employee benefits	23,277	24,260	25,934	70,973	81,879
Naming rights termination	0	26,769	0	26,769	0
Occupancy and equipment	7,457	7,090	7,767	21,790	23,408
Professional fees	5,147	4,596	1,463	15,707	9,601
Data processing	1,657	1,536	1,568	4,966	4,736
Advertising and promotion	219	1,157	2,090	3,132	6,195
Regulatory assessments	784	725	1,239	1,993	5,857
(Gain) loss on investments in alternative energy partnerships	(1,430)	(167)	(940)	308	655
Reversal of provision for loan repurchases	(91)	(34)	(123)	(725)	(300)
Amortization of intangible assets	353	430	500	1,212	1,741
Restructuring expense	0	0	0	0	2,637
All other expense	3,021	6,408	3,742	13,958	12,580
Total noninterest expense	40,394	72,770	43,240	160,083	148,989
Income (loss) from operations before income taxes	18,274	(23,753)	(19,751)	(14,237)	10,895
Income tax expense (benefit)	2,361	(5,304)	(5,619)	(5,108)	1,408
Net income (loss)	15,913	(18,449)	(14,132)	(9,129)	9,487
Preferred stock dividends	3,447	3,442	3,403	10,422	12,019
Income allocated to participating securities	281	0	0	0	0
Participating securities dividends	94	94	94	282	390
Impact of preferred stock redemption	7	(49)	5,093	(568)	5,093
Net income (loss) available to common stockholders	12,084	$ (21,936)	(22,722)	(19,265)	(8,015)
Voting
Noninterest expense
Preferred stock dividends	3,414		3,371	10,323	11,906
Income allocated to participating securities	278		0	0	0
Participating securities dividends	93		93	279	386
Impact of preferred stock redemption	$ 7		$ 5,045	$ (563)	$ 5,045
Earnings (loss) per common share:
Basic (in usd per share)	$ 0.24	$ (0.44)	$ (0.45)	$ (0.38)	$ (0.16)
Diluted (loss) earnings per common share
Diluted (in usd per share)	$ 0.24	(0.44)	$ (0.45)	$ (0.38)	$ (0.16)
Class B Common Stock
Noninterest expense
Preferred stock dividends	$ 33		$ 32	$ 99	$ 113
Income allocated to participating securities	3		0	0	0
Participating securities dividends	1		1	3	4
Impact of preferred stock redemption	$ 0		$ 48	$ (5)	$ 48
Earnings (loss) per common share:
Basic (in usd per share)	$ 0.24	(0.44)	$ (0.45)	$ (0.38)	$ (0.16)
Diluted (loss) earnings per common share
Diluted (in usd per share)	$ 0.24	$ (0.44)	$ (0.45)	$ (0.38)	$ (0.16)