Commitments and Contingencies - Summary of Future Minimum Lease Payments for Capital and Operating Lease (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Present value of payments
2018	$ 1,140
2019	334
2020	115
2021	5
2022	0
Thereafter	0
Total	1,594
Interest
2018	219
2022	140
2020	5
2021	0
2022	0
Thereafter	0
Total	364
Total Capital lease payments
2018	1,359
2019	474
2020	120
2021	5
2022	0
Thereafter	0
Total	1,958
Operating leases
2018	9,338
2019	7,649
2020	4,771
2021	1,944
2022	779
Thereafter	1,447
Total	25,928
Total Lease payments
2018	10,697
2019	8,123
2020	4,891
2021	1,949
2022	779
Thereafter	1,447
Total Lease payments	27,886
Facilities
Operating leases
2018	9,331
2019	7,642
2020	4,764
2021	1,937
2022	772
Thereafter	1,447
Total	25,893
Furniture and Equipment
Operating leases
2018	7
2019	7
2020	7
2021	7
2022	7
Thereafter	0
Total	$ 35