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Credit Facilities (Details) - USD ($)
$ in Thousands
6 Months Ended
May 12, 2014
Jun. 30, 2016
Debt Disclosure [Abstract]    
Maxiumum borrowing line of credit capacity $ 5,000  
Interest rate 3.95%  
Description of collateral  
Inventories, accounts receivable, cash, marketablesecurities, and equipment
Expiration Apr. 01, 2016 May 12, 2017