Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Shares not included in computation of diluted weighted average earnings per common (in shares)	200,000	0	0	0
Net income attributable to common shareholders	$ 2,144	$ 23,232	$ 10,139	$ 59,432
Basic weighted average common shares outstanding (in shares)	5,972,000	5,847,000	5,948,000	5,831,000
Potentially dilutive common shares (in shares)	99,000	247,000	150,000	214,000
Diluted weighted average common shares outstanding (in shares)	6,071,000	6,094,000	6,098,000	6,045,000
Basic weighted average earnings per common share (in dollars per share)	$ 0.36	$ 3.97	$ 1.70	$ 10.19
Diluted weighted average earnings per common share (in dollars per share)	$ 0.35	$ 3.81	$ 1.66	$ 9.83