Condensed Consolidated Statement of Shareholders' Equity Statement - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Capital in Excess of Par Value	Retained Deficit	Accumulated Other Comprehensive Loss (note 9)
Balance, value at Dec. 31, 2015	$ 148,382	$ 218	$ (4,448)	$ 330,756	$ (57,912)	$ (120,232)
Balance, shares at Dec. 31, 2015		21,843,851	110,717
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	718				718
Other comprehensive income	2,336					2,336
Stock compensation expense	281			281
Dividends	(2,515)				(2,515)
Stock withheld for employee taxes	(473)			(473)
Stock issued, value	887		$ 4,666	(2,091)
Stock issued, value lower than repurchase price					(1,688)
Stock issued, shares			(122,785)
Purchase of treasury shares, value	(1,197)		$ (1,197)
Purchase of treasury shares, shares			66,115
Balance, value at Mar. 31, 2016	$ 148,419	$ 218	$ (979)	$ 328,473	$ (61,397)	$ (117,896)
Balance, shares at Mar. 31, 2016		21,843,851	54,047