Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest and dividend income
Loans, including fees	$ 63,642	$ 65,534	$ 89,159	$ 129,176	$ 179,717
Securities	7,816	7,820	12,457	15,636	30,298
Other interest-earning assets	1,239	1,360	2,424	2,599	4,737
Total interest and dividend income	72,697	74,714	104,040	147,411	214,752
Interest expense
Deposits	10,205	14,611	28,598	24,816	60,041
Federal Home Loan Bank advances	4,818	5,883	8,289	10,701	17,370
Securities sold under repurchase agreements	2	0	16	2	34
Long-term debt and other interest-bearing liabilities	2,357	2,359	2,357	4,716	4,719
Total interest expense	17,382	22,853	39,260	40,235	82,164
Net interest income	55,315	51,861	64,780	107,176	132,588
Provision for (reversal of) credit losses	11,826	15,761	(1,900)	27,587	198
Net interest income after provision for (reversal of) credit losses	43,489	36,100	66,680	79,589	132,390
Noninterest income
Customer service fees	1,224	1,096	1,434	2,320	2,949
Loan servicing income	95	75	121	170	239
Income from bank owned life insurance	591	578	580	1,169	1,105
Net gain on sale of securities available-for-sale	2,011	0	0	2,011	208
Fair value adjustment for loans held-for-sale	25	(1,586)	59	(1,561)	60
Net (loss) gain on sale of loans	0	(27)	2,767	(27)	4,319
Other income (loss)	1,582	1,925	(7,251)	3,507	(4,875)
Total noninterest income (loss)	5,528	2,061	(2,290)	7,589	4,005
Noninterest expense
Salaries and employee benefits	24,260	23,436	27,506	47,696	55,945
Write-off of other assets related to naming rights termination, net	26,769	0	0	26,769	0
Occupancy and equipment	7,090	7,243	7,955	14,333	15,641
Professional fees	4,596	5,964	(2,903)	10,560	8,138
Data processing	1,536	1,773	1,672	3,309	3,168
Advertising and promotion	1,157	1,756	2,048	2,913	4,105
Regulatory assessments	725	484	2,136	1,209	4,618
(Gain) loss on investments in alternative energy partnerships	(167)	1,905	(355)	1,738	1,595
Reversal of provision for loan repurchases	(34)	(600)	(61)	(634)	(177)
Amortization of intangible assets	430	429	621	859	1,241
Restructuring (reversal) expense	0	0	(158)	0	2,637
All other expense	6,408	4,529	5,039	10,937	8,838
Total noninterest expense	72,770	46,919	43,500	119,689	105,749
(Loss) income from operations before income taxes	(23,753)	(8,758)	20,890	(32,511)	30,646
Income tax (benefit) expense	(5,304)	(2,165)	4,308	(7,469)	7,027
Net (loss) income	(18,449)	(6,593)	16,582	(25,042)	23,619
Preferred stock dividends	3,442	3,533	4,308	6,975	8,616
Income allocated to participating securities	0	0	271	0	153
Participating securities dividends	94	94	94	188	295
Impact of preferred stock redemption	(49)	(526)	0	(575)	0
Net (loss) income available to common stockholders	(21,936)	$ (9,694)	11,909	(31,630)	14,555
Voting
Noninterest expense
Preferred stock dividends	3,409		4,268	6,909	8,535
Income allocated to participating securities			268		152
Participating securities dividends	93		$ 93	186	$ 292
Impact of preferred stock redemption	$ (49)			$ (570)
(Loss) earnings per common share:
Basic (in usd per share)	$ (0.44)	$ (0.19)	$ 0.23	$ (0.63)	$ 0.29
Diluted (loss) earnings per common share
Diluted (in usd per share)	$ (0.44)	(0.19)	$ 0.23	$ (0.63)	$ 0.29
Class B Common Stock
Noninterest expense
Preferred stock dividends	$ 33		$ 40	$ 66	$ 81
Income allocated to participating securities			3		1
Participating securities dividends	1		$ 1	2	$ 3
Impact of preferred stock redemption	$ 0			$ (5)
(Loss) earnings per common share:
Basic (in usd per share)	$ (0.44)	(0.19)	$ 0.23	$ (0.63)	$ 0.29
Diluted (loss) earnings per common share
Diluted (in usd per share)	$ (0.44)	$ (0.19)	$ 0.23	$ (0.63)	$ 0.29