XML 51 R41.htm IDEA: XBRL DOCUMENT v3.7.0.1
Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Accounting Policies [Abstract]        
Cash and cash equivalents $ 214,016 $ 200,996 $ 38,631  
Restricted cash 57,665 62,457 67,438  
Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows $ 271,681 $ 263,453 $ 106,069 $ 97,542