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The Company and Basis of Presentation (IPO) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Aug. 08, 2016
Aug. 04, 2016
Jun. 30, 2016
Aug. 03, 2016
Dec. 31, 2015
Sale of Stock          
Other offering expenses     $ 149    
Common stock, shares authorized     17,674,419   17,674,419
Subsequent Event          
Sale of Stock          
Common stock, shares authorized       100,000,000  
Preferred stock, shares authorized       10,000,000  
Subsequent Event | IPO          
Sale of Stock          
Issuance of stock (in shares)   3,000,000      
Share price (in dollars per share)   $ 10.00      
Net proceeds   $ 26,000      
Underwriting discounts and commissions $ 2,100 2,100      
Other offering expenses $ 2,200 $ 2,200      
Subsequent Event | Overallotment          
Sale of Stock          
Issuance of stock (in shares) 27,755        
Share price (in dollars per share) $ 10.00