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Notes Payable and Line of Credit - Summary of Notes Payable (Parenthetical) (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 13, 2013
Jun. 23, 2011
Sep. 30, 2015
Dec. 31, 2014
Senior Secured Notes with Discount        
Debt Instrument [Line Items]        
Debt instrument, maturity date   Jul. 01, 2018 Jul. 01, 2018  
Senior secured notes, discount   $ 3,900 $ 1,530 $ 1,944
Debt instrument, interest rate   12.125% 12.125%  
Senior Secured Notes With Premium        
Debt Instrument [Line Items]        
Debt instrument, maturity date Jul. 01, 2018   Jul. 01, 2018  
Debt instrument, interest rate     12.125%  
Senior secured notes, premium     $ 2,812 $ 3,592