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ACCRUED EXPENSES AND OTHER LIABILITIES - Summary of accrued expenses and other liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
ACCRUED EXPENSES AND OTHER LIABILITIES    
Accrued payroll and related expenses $ 1,393 $ 1,122
Accrued sales incentives and discounts 3,025 3,326
Accrued warranty costs 3,410 2,522
Deferred revenue 836 1,389
Other 329 641
Total accrued expenses and other liabilities $ 8,993 $ 9,000