Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Adoption of Topic 842 (Details)

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Commitments and Contingencies - Adoption of Topic 842 (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating lease, right-of-use asset $ 23,837   $ 0
Operating Lease, Liability 26,058   0
Finance lease, right-of-use asset 268 $ 500 0
Finance Lease, Liability $ 60 300 $ 0
Accounting Standards Update 2016-02      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating lease, right-of-use asset   26,617  
Operating Lease, Liability   27,562  
Finance lease, right-of-use asset   493  
Finance Lease, Liability   $ 302