Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Basis of Presentation (Details)

v3.19.1
Summary of Significant Accounting Policies - Basis of Presentation (Details) - USD ($)
$ in Thousands
Jan. 01, 2019
Dec. 31, 2017
Summary of Significant Accounting Policies    
Cumulative effect of applying new accounting standards $ 0 $ 8,645