Related Party Transactions (Details 4) - CRRM $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2015
USD ($)
renewal
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
|
| Office and Laboratory Space Lease Agreement | |||
| Related Party Transaction [Line Items] | |||
| Rent expense | $ | $ 113 | $ 112 | $ 107 |
| Office and Laboratory Space Lease Agreement | CRNF | |||
| Related Party Transaction [Line Items] | |||
| Notice period for termination of agreement | 180 days | ||
| Number of times agreement can be renewed | renewal | 5 | ||
| Additional renewal period of agreement | 1 year | ||
| Office and Laboratory Space Lease Agreement | CRNF | Minimum | |||
| Related Party Transaction [Line Items] | |||
| Notice period for termination of agreement | 60 days | ||
| Environmental Agreement | CRNF | Minimum | |||
| Related Party Transaction [Line Items] | |||
| Initial term of agreement (in years) | 20 years | ||