Supplemental Guarantors Consolidating Condensed Financial Information (Statement of Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	$ 1,892	$ 1,738
Foreign currency translation adjustments	(5,531)	(3,077)
Comprehensive income (loss)	(3,639)	(1,339)
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	1,892	1,738
Foreign currency translation adjustments	0	0
Comprehensive income (loss)	1,892	1,738
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	7,434	11,358
Foreign currency translation adjustments	0	0
Comprehensive income (loss)	7,434	11,358
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	(578)	2,296
Foreign currency translation adjustments	(5,539)	(3,077)
Comprehensive income (loss)	(6,117)	(781)
Consolidating Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	(6,856)	(13,654)
Foreign currency translation adjustments	8	0
Comprehensive income (loss)	$ (6,848)	$ (13,654)