Operating Leases - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 29, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset		$ 496
Operating lease liability		495			$ 1,500
Operating lease rent expense		1,000
Operating lease rent expense			$ 800	$ 3,600
Cash paid from operating cash flows		$ 1,000
Operating lease, weighted average remaining lease term		6 months
Operating right-of-use assets obtained in exchange for lease obligations		$ 1,469
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset					1,500
Operating lease liability					$ 1,500
Weighted average estimated incremental borrowing rate					6.00%
Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating right-of-use assets obtained in exchange for lease obligations	$ 200