RESTRICTED CASH (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 1,997	$ 2,164
Other Noncurrent Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	1,787	1,920
Other Noncurrent Assets [Member] | Collateral accounts
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	619	619
Other Noncurrent Assets [Member] | Rental deposits
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	1,168	1,301
Prepaid Expenses and Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	210	244
Prepaid Expenses and Other Current Assets [Member] | Others
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	145	142
Prepaid Expenses and Other Current Assets [Member] | Client guarantees
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 65	$ 102