Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Effects of Adoption of ASU 2016-18 (Details)

v3.19.3
Summary of Significant Accounting Policies - Effects of Adoption of ASU 2016-18 (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Net cash provided by operating activities $ 244,807 $ 140,263 $ 129,449
Net cash used in investing activities (331,296) (699,862) (140,181)
End of period $ 382,758 165,345 188,540
Originally Reported      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Net cash provided by operating activities   137,327 136,216
Net cash used in investing activities   (709,274) (145,141)
End of period   69,343 104,886
Accounting Standards Update 2016-18      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Net cash provided by operating activities   2,936 (6,767)
Net cash used in investing activities   9,412 4,960
End of period   $ 96,002 $ 83,654