Interim Condensed Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2014	$ 337,670	$ 1,130	$ 93,849	$ (426)	$ 259,476	$ (16,359)
Balance (shares) at Dec. 31, 2014		11,264
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,069	$ 0	0	0	17,069	0
Translation adjustment	(7,822)	0	0	0	0	(7,822)
Net actuarial gain arising during period, net of taxes	383	0	0	0	0	383
Stock-based compensation	466	0	466	0	0	0
Exercise of stock options	1,939	$ 9	1,930	0	0	0
Exercise of stock options (shares)		82
Dividends paid ($.16 per share)	(1,808)	$ 0	0	0	(1,808)	0
Balance at Jun. 30, 2015	$ 347,897	$ 1,139	$ 96,245	$ (426)	$ 274,737	$ (23,798)
Balance (shares) at Jun. 30, 2015		11,346