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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
ACCOUNTS RECEIVABLE    
Accounts receivable, gross $ 16,593 $ 19,474
Less: allowance for doubtful accounts (465) (511)
Accounts receivable, net 16,128 18,963
Accounts receivable, other    
ACCOUNTS RECEIVABLE    
Accounts receivable, gross 9,023 11,292
Credit card receivables    
ACCOUNTS RECEIVABLE    
Accounts receivable, gross $ 7,570 $ 8,182