CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Contributed Capital [Member]	Retained Earnings [Member]	Total
BALANCE at Dec. 31, 2013	$ 422	$ 11,693	$ 142,570	$ 154,685
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	0	0	6,523	6,523
Dividends paid on common stock	0	0	(3,711)	(3,711)
BALANCE at Dec. 31, 2014	422	11,693	145,382	157,497
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	0	0	(1,275)	(1,275)
Dividends paid on common stock	0	0	(3,712)	(3,712)
BALANCE at Dec. 31, 2015	422	11,693	140,395	152,510
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	0	0	2,513	2,513
Dividends paid on common stock	0	0	(3,711)	(3,711)
BALANCE at Dec. 31, 2016	$ 422	$ 11,693	$ 139,197	$ 151,312