ACCOUNTS RECEIVABLE (Details)	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2014 CET 21 [Member] Ceska Sporitelna [Member] USD ($)	Mar. 31, 2014 CET 21 [Member] Ceska Sporitelna [Member] CZK	Dec. 31, 2013 CET 21 [Member] Ceska Sporitelna [Member] USD ($)	Dec. 31, 2013 CET 21 [Member] Ceska Sporitelna [Member] CZK
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unrelated customers	$ 170,082,000	$ 195,637,000
Less: allowance for bad debts and credit notes	(16,447,000)	(17,380,000)
Related parties	164,000	1,479,000
Less: allowance for bad debts and credit notes	(90,000)	(289,000)
Total accounts receivable	153,709,000	179,447,000
Receivables pledged as collateral related to factoring agreement			$ 500,000	10,200,000	$ 700,000	13,100,000