CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Preferred Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings
Balance at beginning of period at Dec. 31, 2019		$ 533	$ 0	$ (50,576)	$ 243,932	$ 571,693
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation					5,247
Other					(1,272)
Net income (loss)	$ (2,050)					(2,050)
Dividends paid						(7,796)
Balance at end of period at Sep. 30, 2020	759,711	533	0	(50,576)	247,907	561,847
Balance at beginning of period at Jun. 30, 2020		533	0	(50,576)	246,126	578,880
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation					1,781
Net income (loss)	(14,434)					(14,434)
Dividends paid						(2,599)
Balance at end of period at Sep. 30, 2020	759,711	533	0	(50,576)	247,907	561,847
Balance at beginning of period at Dec. 31, 2020	725,241	534	0	(50,576)	249,746	525,537
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares		2
Stock compensation					8,377
Other					(2,806)
Net income (loss)	12,391					12,391
Dividends paid						(7,842)
Balance at end of period at Sep. 30, 2021	735,363	536	0	(50,576)	255,317	530,086
Balance at beginning of period at Jun. 30, 2021		536	0	(50,576)	253,922	494,272
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation					1,395
Net income (loss)	38,427					38,427
Dividends paid						(2,613)
Balance at end of period at Sep. 30, 2021	$ 735,363	$ 536	$ 0	$ (50,576)	$ 255,317	$ 530,086