CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands		Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Common Shares Held In Treasury [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2020		$ 27,006			$ (60,482)	$ 212,342	$ (89,635)	$ 296,634
Common Stock, Share, Beginning Balance (in shares) at Dec. 31, 2020			1,960
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2020				234,409
Net income (loss)						130		130
Unrealized gain (loss) on derivatives, net							(129)	(129)
Currency translation adjustments							(10,778)	(10,778)
Issuance of Common Shares ( in shares)		224
Issuance of Common Shares ( in treasury shares)			(224)
Repurchased Common Shares for treasury, net					4,392			4,392
Repurchased Common Shares for treasury (in shares)		(68)
Repurchased Common Shares for treasury (in treasury shares)			68
Share-based compensation				$ (5,577)				(5,577)
Balance at Mar. 31, 2021				$ 228,832	(56,090)	212,472	(100,542)	284,672
Common Stock, Share, Ending Balance (in shares) at Mar. 31, 2021		27,162
Treasury Stock, Shares, Ending Balance at Mar. 31, 2021			1,804
Balance at Dec. 31, 2020		$ 27,006			(60,482)	212,342	(89,635)	296,634
Common Stock, Share, Beginning Balance (in shares) at Dec. 31, 2020			1,960
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2020				234,409
Net income (loss)								19,928
Unrealized gain (loss) on derivatives, net	[1]							257
Balance at Jun. 30, 2021				$ 230,430	(56,086)	232,270	(92,984)	313,630
Common Stock, Share, Ending Balance (in shares) at Jun. 30, 2021		27,164
Treasury Stock, Shares, Ending Balance at Jun. 30, 2021			1,802
Balance at Mar. 31, 2021				228,832	(56,090)	212,472	(100,542)	284,672
Common Stock, Share, Beginning Balance (in shares) at Mar. 31, 2021		27,162
Treasury Stock, Shares, Beginning Balance at Mar. 31, 2021			1,804
Net income (loss)						19,798		19,798
Unrealized gain (loss) on derivatives, net							386	386	[1]
Currency translation adjustments							7,172	7,172
Issuance of Common Shares ( in shares)		2
Issuance of Common Shares ( in treasury shares)			(2)
Repurchased Common Shares for treasury, net					4			4
Share-based compensation				1,598				1,598
Balance at Jun. 30, 2021				230,430	(56,086)	232,270	(92,984)	313,630
Common Stock, Share, Ending Balance (in shares) at Jun. 30, 2021		27,164
Treasury Stock, Shares, Ending Balance at Jun. 30, 2021			1,802
Balance at Dec. 31, 2021				232,490	(55,264)	215,748	(97,024)	$ 295,950
Common Stock, Share, Beginning Balance (in shares) at Dec. 31, 2021		27,191						27,191
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2021			1,775					1,775
Net income (loss)						(7,675)		$ (7,675)
Unrealized gain (loss) on derivatives, net							1,048	1,048
Currency translation adjustments							4,161	4,161
Issuance of Common Shares ( in shares)		161
Issuance of Common Shares ( in treasury shares)			(161)
Repurchased Common Shares for treasury, net					4,093			4,093
Repurchased Common Shares for treasury (in shares)		(36)
Repurchased Common Shares for treasury (in treasury shares)			36
Share-based compensation				(3,653)				(3,653)
Balance at Mar. 31, 2022				228,837	(51,171)	208,073	(91,815)	293,924
Common Stock, Share, Ending Balance (in shares) at Mar. 31, 2022		27,316
Treasury Stock, Shares, Ending Balance at Mar. 31, 2022			1,650
Balance at Dec. 31, 2021				232,490	(55,264)	215,748	(97,024)	$ 295,950
Common Stock, Share, Beginning Balance (in shares) at Dec. 31, 2021		27,191						27,191
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2021			1,775					1,775
Net income (loss)								$ (15,014)
Unrealized gain (loss) on derivatives, net	[1]							995
Balance at Jun. 30, 2022				230,455	(51,081)	200,734	(107,580)	$ 272,528
Common Stock, Share, Ending Balance (in shares) at Jun. 30, 2022		27,318						27,318
Treasury Stock, Shares, Ending Balance at Jun. 30, 2022			1,648					1,648
Balance at Mar. 31, 2022				228,837	(51,171)	208,073	(91,815)	$ 293,924
Common Stock, Share, Beginning Balance (in shares) at Mar. 31, 2022		27,316
Treasury Stock, Shares, Beginning Balance at Mar. 31, 2022			1,650
Net income (loss)						(7,339)		(7,339)
Unrealized gain (loss) on derivatives, net							(53)	(53)	[1]
Currency translation adjustments							(15,712)	(15,712)
Issuance of Common Shares					90			90
Issuance of Common Shares ( in shares)		4
Issuance of Common Shares ( in treasury shares)			(4)
Repurchased Common Shares for treasury (in shares)		(2)
Repurchased Common Shares for treasury (in treasury shares)			2
Share-based compensation				1,618				1,618
Balance at Jun. 30, 2022				$ 230,455	$ (51,081)	$ 200,734	$ (107,580)	$ 272,528
Common Stock, Share, Ending Balance (in shares) at Jun. 30, 2022		27,318						27,318
Treasury Stock, Shares, Ending Balance at Jun. 30, 2022			1,648					1,648

[1] Three months ended