Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands		Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018		5,957
Balance at Dec. 31, 2018			$ 116	$ 82,776	$ (142,552)	$ 199,107	$ 139,447
Net (loss) / income						8,301	8,301
Stock awards-shares issued including tax benefits (in shares)		1
Stock awards-shares issued including tax benefits			0	0	0	0	0
Treasury stock repurchases (in shares)		(40)
Treasury stock repurchases					(1,618)		(1,618)
Stock based compensation	[1]			216			216
Treasury stock repurchases (in shares)		40
Balance (in shares) at Mar. 31, 2019		5,918
Balance at Mar. 31, 2019			116	82,992	(144,170)	207,408	146,346
Balance (in shares) at Dec. 31, 2018		5,957
Balance at Dec. 31, 2018			116	82,776	(142,552)	199,107	139,447
Net (loss) / income							21,536
Balance (in shares) at Sep. 30, 2019		5,754
Balance at Sep. 30, 2019			116	83,512	(156,167)	220,643	148,104
Balance (in shares) at Mar. 31, 2019		5,918
Balance at Mar. 31, 2019			116	82,992	(144,170)	207,408	146,346
Net (loss) / income						8,654	8,654
Stock awards-shares issued including tax benefits (in shares)		35
Stock awards-shares issued including tax benefits			0	0	0	0	0
Treasury stock repurchases (in shares)		(196)
Treasury stock repurchases					(11,823)		(11,823)
Stock based compensation				310			310
Treasury stock repurchases (in shares)		196
Balance (in shares) at Jun. 30, 2019		5,757
Balance at Jun. 30, 2019			116	83,302	(155,993)	216,062	143,487
Net (loss) / income			0	0	0	4,581	4,581
Stock awards-shares issued including tax benefits			0	0	0	0	0
Treasury stock repurchases (in shares)		(3)
Treasury stock repurchases			0	0	(174)	0	(174)
Stock based compensation			0	210	0	0	210
Treasury stock repurchases (in shares)		3
Balance (in shares) at Sep. 30, 2019		5,754
Balance at Sep. 30, 2019			116	83,512	(156,167)	220,643	148,104
Balance (in shares) at Dec. 31, 2019		5,749
Balance at Dec. 31, 2019			117	83,688	(156,837)	207,007	133,975
Net (loss) / income						(1,304)	(1,304)
Stock awards-shares issued including tax benefits (in shares)		2
Stock awards-shares issued including tax benefits			0	0	0	0	0
Treasury stock repurchases (in shares)		(9)
Treasury stock repurchases					(321)		(321)
Stock based compensation				305			305
Treasury stock repurchases (in shares)		9
Balance (in shares) at Mar. 31, 2020		5,742
Balance at Mar. 31, 2020			117	83,993	(157,158)	205,703	132,655
Balance (in shares) at Dec. 31, 2019		5,749
Balance at Dec. 31, 2019			117	83,688	(156,837)	207,007	133,975
Net (loss) / income							3,874
Balance (in shares) at Sep. 30, 2020		5,735
Balance at Sep. 30, 2020			117	84,118	(158,630)	210,880	136,485
Balance (in shares) at Mar. 31, 2020		5,742
Balance at Mar. 31, 2020			117	83,993	(157,158)	205,703	132,655
Net (loss) / income						(823)	(823)
Stock awards-shares issued including tax benefits (in shares)		34
Stock awards-shares issued including tax benefits			0	0	0	0	0
Treasury stock repurchases							0
Stock based compensation				21			21
Balance (in shares) at Jun. 30, 2020		5,776
Balance at Jun. 30, 2020			117	84,014	(157,158)	204,880	131,853
Net (loss) / income			0	0	0	6,000	6,000
Stock awards-shares issued including tax benefits			0	0	0	0	0
Treasury stock repurchases (in shares)		41
Treasury stock repurchases			0	0	(1,472)	0	(1,472)
Stock based compensation			0	104	0	0	104
Treasury stock repurchases (in shares)		(41)
Balance (in shares) at Sep. 30, 2020		5,735
Balance at Sep. 30, 2020			$ 117	$ 84,118	$ (158,630)	$ 210,880	$ 136,485

[1] Approximately $90,000 was accrued as share-based compensation at March 31, 2019 for restricted stock earned by non-employee directors but for which shares were not issued until April 2019.