Commitments and Contingencies - Credit Facility (Details) $ in Millions	Jun. 30, 2017 USD ($)
Term Loan
Line of Credit Facility [Line Items]
Borrowing capacity	$ 10.0
Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity	$ 5.0
Accounts receivable borrowing base percentage	80.00%
Stated interest rate	5.00%
Proceeds from license fees received	$ 6.0
LIBOR | Term Loan
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.60%
Prime Rate | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Through and including the first anniversary of the funding date of the first Term Debt drawn | Term Loan
Line of Credit Facility [Line Items]
Prepayment fee percentage	2.00%
After the first anniversary of the funding date of the first Term Debt drawn and before the maturity date | Term Loan
Line of Credit Facility [Line Items]
Prepayment fee percentage	1.00%
On the earliest to occur of the maturity date, the acceleration of Term Debt drawn or prepayment of Term Debt drawn | Term Loan
Line of Credit Facility [Line Items]
Prepayment fee percentage	5.50%
Through and including the first anniversary of the closing date | Revolving Credit Facility
Line of Credit Facility [Line Items]
Prepayment fee percentage	3.00%
After the first anniversary of the closing date through and including the second anniversary of the closing date | Revolving Credit Facility
Line of Credit Facility [Line Items]
Prepayment fee percentage	2.00%
After the second anniversary of the closing date through and including the third anniversary of the closing date | Revolving Credit Facility
Line of Credit Facility [Line Items]
Prepayment fee percentage	1.00%