Related Party Transactions - Operating Leases (Details) - Affiliated entity $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2015
USD ($)
|
Sep. 30, 2016
USD ($)
period
company
|
Sep. 30, 2015
USD ($)
|
|
| Operating lease, Portland, Oregon | ||||
| Related Party Transaction [Line Items] | ||||
| Number of limited liability companies | company | 2 | |||
| Lease payments to lessors [Abstract] | ||||
| Total lease payments to lessors | $ 30 | $ 30 | $ 90 | $ 90 |
| Operating lease, Kona, Hawaii | ||||
| Lease payments to lessors [Abstract] | ||||
| Total lease payments to lessors | $ 157 | $ 131 | $ 414 | $ 392 |
| Percentage of common stock held by lessor (in hundredths) | 5.00% | |||
| Sublease contracts expire date | Dec. 31, 2020 | |||
| Number of additional lease renewal periods | period | 2 | |||
| Sublease contract option period | 5 years | |||