CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Contributed Capital	Retained Earnings
Beginning balance at Dec. 31, 2015	$ 152,510	$ 422	$ 11,693	$ 140,395
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (losses)	2,513			2,513
Dividends declared:
Common stock, $0.88/share	(3,711)			(3,711)
Ending balance at Dec. 31, 2016	151,312	422	11,693	139,197
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (losses)	(482)			(482)
Dividends declared:
Common stock, $0.88/share	(3,711)			(3,711)
Ending balance at Dec. 31, 2017	147,119	422	11,693	135,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (losses)	2,945			2,945
Stock-based compensation expense	255		255
Dividends declared:
Common stock, $0.88/share	(3,711)			(3,711)
Awards under LTIP, $0.44/share	(10)			(10)
Ending balance at Dec. 31, 2018	$ 146,598	$ 422	$ 11,948	$ 134,228