Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details)

v3.8.0.1
Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Jun. 30, 2014
Summary of Significant Accounting Policies          
Cash and cash equivalents $ 84,043 $ 158,779      
Restricted cash 4,253 4,017      
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 88,296 $ 162,796 $ 198,771 $ 229,046 $ 51,179