ACCOUNTS RECEIVABLE (Details)	Mar. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Mar. 31, 2013 Factoring Agreement [Member] CZECH REPUBLIC [Member] USD ($)	Mar. 31, 2013 Factoring Agreement [Member] CZECH REPUBLIC [Member] CZK	Dec. 31, 2012 Factoring Agreement [Member] CZECH REPUBLIC [Member] USD ($)	Dec. 31, 2012 Factoring Agreement [Member] CZECH REPUBLIC [Member] CZK
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unrelated customers	$ 155,770,000	$ 199,494,000
Less: allowance for bad debts and credit notes	(16,484,000)	(16,784,000)
Related parties	2,541,000	1,919,000
Less: allowance for bad debts and credit notes	(556,000)	(135,000)
Total accounts receivable	141,271,000	184,494,000
Receivables pledged as collateral related to factoring agreement			$ 300,000	6,100,000	$ 6,600,000	132,400,000