Summary of Significant Accounting Policies - ASC 842 Impact on Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other non-current assets	$ 3,644	$ 3,982	$ 1,029
Accrued liabilities	15,034	721	9,448
Other liabilities	$ 3,700	4,469	1,069
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other non-current assets			0
Accrued liabilities			139
Other liabilities			$ 1,069
Restatement Adjustment | Adjustments Due to ASC 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other non-current assets		3,982
Accrued liabilities		582
Other liabilities		$ 3,400