CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Class B Preferred Stock Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	AOCI Gain/(Loss)	Total
Balance at Dec. 31, 2019	$ 3	$ 82	$ 216,468	$ 81,364	$ 1,207	$ 299,124
Balance (in shares) at Dec. 31, 2019	272,636	8,312,918
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			1,754			1,754
Stock-based compensation (in shares)		(12,244)
Impact shares for tax withholding for restricted stock vesting			(579)			(579)
Impact of shares for tax withholding for restricted stock vesting (in shares)		(5,873)
Net income				16,908		16,908
Other comprehensive income (loss)					(38)	(38)
Balance at Jun. 30, 2020	$ 3	$ 82	217,643	98,272	1,169	317,169
Balance (in shares) at Jun. 30, 2020	272,636	8,294,801
Balance at Mar. 31, 2020	$ 3	$ 82	216,701	87,461	4,289	308,536
Balance (in shares) at Mar. 31, 2020	272,636	8,294,801
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			942			942
Net income				10,811		10,811
Other comprehensive income (loss)					(3,120)	(3,120)
Balance at Jun. 30, 2020	$ 3	$ 82	217,643	98,272	1,169	317,169
Balance (in shares) at Jun. 30, 2020	272,636	8,294,801
Balance at Dec. 31, 2020	$ 3	$ 82	218,899	120,830	973	340,787
Balance (in shares) at Dec. 31, 2020	272,636	8,295,272
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants, net of forfeiture		$ 1				1
Restricted stock grants, net of forfeiture (in shares)		93,090
Stock-based compensation			2,445			2,445
Impact shares for tax withholding for restricted stock vesting			(2,246)			(2,246)
Impact of shares for tax withholding for restricted stock vesting (in shares)		(44,170)
Net income				25,453		25,453
Other comprehensive income (loss)					(2,845)	(2,845)
Balance at Jun. 30, 2021	$ 3	$ 83	219,098	146,283	(1,872)	363,595
Balance (in shares) at Jun. 30, 2021	272,636	8,344,192
Balance at Mar. 31, 2021	$ 3	$ 83	217,384	132,947	(2,200)	348,217
Balance (in shares) at Mar. 31, 2021	272,636	8,345,032
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants, net of forfeiture (in shares)		(191)
Stock-based compensation			1,859			1,859
Impact shares for tax withholding for restricted stock vesting			(145)			(145)
Impact of shares for tax withholding for restricted stock vesting (in shares)		(649)
Net income				13,336		13,336
Other comprehensive income (loss)					328	328
Balance at Jun. 30, 2021	$ 3	$ 83	$ 219,098	$ 146,283	$ (1,872)	$ 363,595
Balance (in shares) at Jun. 30, 2021	272,636	8,344,192