Commitments and Contingencies - Future Minimum Lease Payments Under Topic 840 (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating Leases
2019	$ 3,280
2020	712
2021	490
2022	41
2023	0
Total minimum lease payments	4,523
Capital Leases
2019	252
2020	61
2021	0
2022	0
2023	0
Total minimum lease payments	313
Less: amount representing interest	(10)
Present value of capital lease obligations	303
Less: current portion	(242)
Long-term portion of capital leases	61
Future minimum sublease rentals	$ 900

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45023-112735