Commitments and Contingencies - Operating Leases (Details) $ in Thousands |
1 Months Ended | 3 Months Ended | ||
|---|---|---|---|---|
|
Mar. 31, 2015
ft²
|
Mar. 31, 2018
USD ($)
|
Mar. 31, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
|
|
| Operating leases | ||||
| Area of office and laboratory space leased | ft² | 21,488 | |||
| Term of option to extend the lease | 5 years | |||
| Rent expense | $ 200 | $ 200 | ||
| Restricted cash, current | 193 | $ 193 | ||
| Restricted Cash | ||||
| Operating leases | ||||
| Letter of credit outstanding | $ 500 | $ 500 | ||
| X | ||||||||||
- Definition Represents information pertaining to the area leased. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
|
| X | ||||||||||
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|