Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Weighted average common shares outstanding   during the period – shares used for basic   earnings per common share	9,353	9,620	9,347	9,712
Common shares issuable under share based payment plans which are potentially dilutive	37	29	38	32
Common shares used for diluted earnings per common share	9,390	9,649	9,385	9,744
Net income attributable to the Company	$ 82	$ 4,149	$ 28,455	$ 5,767
Earnings per common share:
-basic	$ 0.01	$ 0.43	$ 3.04	$ 0.59
-diluted	$ 0.01	$ 0.43	$ 3.03	$ 0.59