Debt - Principal Payments Remaining on Debt (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Debt Disclosure [Abstract]
Remainder of 2019	$ 327
2020	481
2021	4,483
2022	19,257
2023	35,119
Total	59,667
Add: capital lease principal payments	104
Less: unamortized debt discount and debt issuance costs	(7,841)
Total	51,930
Less: current portion of long-term debt	(836)
Long-term debt, net of current portion	$ 51,094

Unamortized debt issuance and debt discount.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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Amount of short-term and long-term debt and lease obligation.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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