Condensed Consolidated Statement of Shareholders' Equity Statement - 6 months ended Jun. 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]
Cumulative-effect adjustment for the adoption of ASU 2016-09	2,310		127	2,183
Net loss	(7,402)			(7,402)
Other comprehensive income	10,049				10,049
Stock compensation expense	2,090		2,090
Dividends	(5,169)			(5,169)
Stock withheld for employee taxes	(601)		(601)
Stock issued, value	406	$ 1	405
Stock issued, shares		145,965
Balance, value at Jun. 30, 2017	$ 146,802	$ 220	$ 331,743	$ (70,013)	$ (115,148)
Balance, shares at Jun. 30, 2017		22,010,506