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Debt - 2013 Loan and Security Agreement (Details) - 2013 Loan and Security Agreement - USD ($)
1 Months Ended
Mar. 31, 2013
Oct. 31, 2013
Revolving Credit Facility    
Debt Instrument [Line Items]    
Credit facility, maximum borrowing capacity $ 20,000,000.0  
Revolving Credit Facility | Prime Rate    
Debt Instrument [Line Items]    
Debt instrument, basis spread (as a percentage) 0.50%  
Term Loan    
Debt Instrument [Line Items]    
Amount borrowed under agreement   $ 5,000,000.0