Debt Financing - Schedule of Long-term Debt Instruments (Details) - Build to Suit Obligation $ in Thousands	Jun. 30, 2019 USD ($)
Debt Instrument [Line Items]
Build-to-suit obligation principal amount	$ 8,190
Build-to-suit obligation Purchase Option Fees at present value	996
Less: unamortized Purchase Option Fees	(647)
unamortized fair value of free-standing warrants	(141)
unamortized debt discount	(145)
unamortized debt issuance costs	(15)
Build-to-suit obligation, net of debt issuance costs and discount	8,238
Build-to-suit obligation, current portion	3,147
Build-to-suit obligation, long-term portion, net of debt issuance costs and discount	$ 5,091

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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