Condensed Consolidated Statement of Shareholders' Equity Statement - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Deficit	Accumulated Other Comprehensive Loss
Balance, value at Dec. 31, 2016	$ 145,119	$ 219	$ 329,722	$ (59,625)	$ (125,197)
Balance, shares at Dec. 31, 2016		21,864,541
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumlative-effect adjustment for the adoption of ASU 2016-09	2,310		127	2,183
Net loss	(86,217)			(86,217)
Other comprehensive income	14,718				14,718
Stock compensation expense	2,857		2,857
Dividends	(7,762)			(7,762)
Stock withheld for employee taxes	(623)		(623)
Stock issued, value	412	$ 1	411
Stock issued, shares		151,567
Balance, value at Sep. 30, 2017	$ 70,814	$ 220	$ 332,494	$ (151,421)	$ (110,479)
Balance, shares at Sep. 30, 2017		22,016,108