Earnings per Weighted Average Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings per Weighted Average Common Share
Net income from continuing operations	$ 7,901	$ 7,838	$ 37,667	$ 36,174	$ 15,739	$ 73,841
Allocation of income for participating shares	(36)		(166)		(71)	(310)
Net income from continuing operations attributed to common shareholders	$ 7,865		$ 37,501		$ 15,668	$ 73,531
Total weighted average common shares outstanding, including participating shares	14,664,329		15,049,378		14,679,049	14,883,635
Less: weighted average participating shares	(65,272)		(66,013)		(65,650)	(66,323)
Basic earnings per share denominator	14,599,057		14,983,365		14,613,399	14,817,312
Common equivalent shares- non-vested performance stock grants	103,570		96,130		101,700	96,249
Diluted earnings per share denominator	14,702,627		15,079,495		14,715,099	14,913,561
Basic earnings per share (in dollars per share)	$ 0.54		$ 2.50		$ 1.07	$ 4.96
Diluted earnings per share (in dollars per share)	0.53		2.49		1.06	4.93
Undistributed earnings attributable to common shareholders - basic and diluted:
Net income from continuing operations attributable to common shareholders -Basic	0.54		2.50		1.07	4.96
Dividends declared	(0.90)		(0.90)		(1.80)	(1.80)
Undistributed earnings	(0.36)		1.60		(0.73)	3.16
Undistributed earnings attributable to common shareholders - diluted
Net income from continuing operations attributable to common shareholders -Diluted	0.53		2.49		1.06	4.93
Dividends declared	(0.90)		(0.90)		(1.80)	(1.80)
Undistributed earnings	$ (0.37)		$ 1.59		$ (0.74)	$ 3.13
Antidilutive common shares	0		0		0	0