Summary of Significant Accounting Policies and Basis of Presentation - Summary of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and Cash Equivalents		$ 12,676	$ 14,761	$ 20,090	$ 57,443
Restricted Cash		50	951	37,505	0
Cash, Cash Equivalents and Restricted Cash	[1]	$ 12,726	$ 15,712	$ 57,595	$ 57,443

[1] See Note 2. Summary of Significant Accounting Policies and Basis of Presentation for our reconciliation of total cash.