GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION Cash Flow (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	$ 18,257	$ (2,276)
Payments to Acquire Property, Plant, and Equipment	(8,982)	(10,230)
Disposal of property, plant and equipment	69	167
Proceeds From (Payments For) Intercompany Investing Activities	0	0
Net Cash Provided by (Used in) Investing Activities	(8,913)	(10,063)
Early Repayment of Senior Debt		(20,467)
Payments of Debt Issuance Costs	(889)	(780)
Change in restricted cash (Note 8)	0	20,467
Proceeds from credit facilities	0	228
Repayments of Debt and Capital Lease Obligations	(458)	(273)
Dividends paid to holders of noncontrolling interests	(46)	(113)
Proceeds From (Payments For) Intercompany Financing Activities	0	0
Net Cash Provided by (Used in) Financing Activities	(1,393)	(938)
Cash Provided by (Used in) Operating Activities, Discontinued Operations	(348)	(713)
Impact of exchange rate fluctuations on cash and cash equivalents	338	(5,309)
Cash Provided by (Used in) Investing Activities, Discontinued Operations	286	24
Cash and Cash Equivalents, Period Increase (Decrease)	8,351	(17,897)
Cash and cash equivalents	112,386	121,766	104,035	139,663
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	(24,649)	(25,710)
Payments to Acquire Property, Plant, and Equipment	0	0
Disposal of property, plant and equipment	0	0
Proceeds From (Payments For) Intercompany Investing Activities	15,242	0
Net Cash Provided by (Used in) Investing Activities	15,242	0
Early Repayment of Senior Debt		(20,467)
Payments of Debt Issuance Costs	(62)	(780)
Change in restricted cash (Note 8)		20,467
Proceeds from credit facilities		0
Repayments of Debt and Capital Lease Obligations	0	0
Dividends paid to holders of noncontrolling interests	0	0
Proceeds From (Payments For) Intercompany Financing Activities	0	20,449
Net Cash Provided by (Used in) Financing Activities	(62)	19,669
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0	0
Impact of exchange rate fluctuations on cash and cash equivalents	0	0
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	(9,469)	(6,041)
Cash and cash equivalents	9,992	3,331	19,461	9,372
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	(2,584)	2,720
Payments to Acquire Property, Plant, and Equipment	0	0
Disposal of property, plant and equipment	0	0
Proceeds From (Payments For) Intercompany Investing Activities	21,096	(26,012)
Net Cash Provided by (Used in) Investing Activities	21,096	(26,012)
Early Repayment of Senior Debt		0
Payments of Debt Issuance Costs	0	0
Change in restricted cash (Note 8)		0
Proceeds from credit facilities		0
Repayments of Debt and Capital Lease Obligations	0	0
Dividends paid to holders of noncontrolling interests	0	0
Proceeds From (Payments For) Intercompany Financing Activities	(15,242)	20,749
Net Cash Provided by (Used in) Financing Activities	(15,242)	20,749
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0	0
Impact of exchange rate fluctuations on cash and cash equivalents	38	21
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	3,308	(2,522)
Cash and cash equivalents	8,730	314	5,422	2,836
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	45,490	20,714
Payments to Acquire Property, Plant, and Equipment	(8,982)	(10,230)
Disposal of property, plant and equipment	69	167
Proceeds From (Payments For) Intercompany Investing Activities	0	0
Net Cash Provided by (Used in) Investing Activities	(8,913)	(10,063)
Early Repayment of Senior Debt		0
Payments of Debt Issuance Costs	(827)	0
Change in restricted cash (Note 8)		0
Proceeds from credit facilities		228
Repayments of Debt and Capital Lease Obligations	(458)	(273)
Dividends paid to holders of noncontrolling interests	(46)	(113)
Proceeds From (Payments For) Intercompany Financing Activities	(21,096)	(15,186)
Net Cash Provided by (Used in) Financing Activities	(22,427)	(15,344)
Cash Provided by (Used in) Operating Activities, Discontinued Operations	(348)	(713)
Impact of exchange rate fluctuations on cash and cash equivalents	300	(5,330)
Cash Provided by (Used in) Investing Activities, Discontinued Operations	286	24
Cash and Cash Equivalents, Period Increase (Decrease)	14,512	(9,334)
Cash and cash equivalents	93,664	118,121	79,152	127,455
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	0	0
Payments to Acquire Property, Plant, and Equipment	0	0
Disposal of property, plant and equipment	0	0
Proceeds From (Payments For) Intercompany Investing Activities	(36,338)	26,012
Net Cash Provided by (Used in) Investing Activities	(36,338)	26,012
Early Repayment of Senior Debt		0
Payments of Debt Issuance Costs	0	0
Change in restricted cash (Note 8)		0
Proceeds from credit facilities		0
Repayments of Debt and Capital Lease Obligations	0	0
Dividends paid to holders of noncontrolling interests	0	0
Proceeds From (Payments For) Intercompany Financing Activities	36,338	(26,012)
Net Cash Provided by (Used in) Financing Activities	36,338	(26,012)
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0	0
Impact of exchange rate fluctuations on cash and cash equivalents	0	0
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	0	0
Cash and cash equivalents	$ 0	$ 0	$ 0	$ 0