Commitment and Contingencies - Lease Narrative (Details) $ in Thousands, € in Millions |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||
---|---|---|---|---|---|---|---|
Mar. 31, 2016 |
Aug. 31, 2015
EUR (€)
ft²
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2017
USD ($)
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2017
USD ($)
|
Aug. 31, 2015
USD ($)
|
|
Loss Contingencies [Line Items] | |||||||
Rent Expense | $ 200 | $ 200 | $ 400 | $ 500 | |||
Future minimum payments due | 1,753 | 1,753 | |||||
Dublin, Ireland [Member] | |||||||
Loss Contingencies [Line Items] | |||||||
Operating Leases, Area of office space (in sq ft) | ft² | 6,258 | ||||||
Operating leases, term of contract (in years) | 10 years | ||||||
Operating Leases, Rent review term (in years) | 5 years | ||||||
Operating leases, Option to terminate, date | Aug. 31, 2020 | ||||||
Future minimum payments due | € 2.0 | $ 1,800 | $ 1,800 | $ 2,400 | |||
Built-to-Suit Lease [Member] | |||||||
Loss Contingencies [Line Items] | |||||||
Build-to-suit lease expiration date | Dec. 31, 2023 |