Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies and Basis of Presentations - Pronouncements Adopted (Details)

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Summary of Significant Accounting Policies and Basis of Presentations - Pronouncements Adopted (Details)
$ in Thousands
Jan. 01, 2019
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Cumulative effect adjustment upon adoption of new accounting standard $ 906
ASU No. 2016-02  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Cumulative effect adjustment upon adoption of new accounting standard $ 900