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Debt (Details) - USD ($)
Apr. 27, 2016
Nov. 02, 2015
Apr. 29, 2016
Jan. 29, 2016
Sep. 14, 2015
Aug. 03, 2015
Jun. 30, 2015
Convertible Notes Payable              
Debt Instrument [Line Items]              
Maximum principal amount of convertible notes to be sold       $ 22,500,000.0 $ 500,000.0 $ 22,000,000  
Line of Credit | Revolving Credit Facility              
Debt Instrument [Line Items]              
Maximum borrowing capacity   $ 30,000,000          
Maximum amount outstanding during period   30,000,000          
Additional borrowing capacity   $ 30,000,000          
Long-term Line of Credit     $ 0        
Unused capacity, commitment fee percentage   0.35%          
Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)              
Debt Instrument [Line Items]              
Basis spread on variable rate   1.60%          
Maximum | Convertible Notes Payable              
Debt Instrument [Line Items]              
Maximum principal amount of convertible notes to be sold             $ 25,000,000
Common stock - Class A of $.01 par value: 2,500,000 shares authorized; 10,671 issued and outstanding              
Debt Instrument [Line Items]              
Shares issued in conversion 2,008,924            
Convertible notes $ 22,500,000            
Conversion price $ 11.20            
Conversion price, percent of IPO price 80.00%            
Price per share (usd per share) $ 14.00