Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows (Details))

v3.10.0.1
Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows (Details)) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities $ 411,044 $ 286,653
Net cash (used in) provided by investing activities (360,465) (1,829,624)
Net cash (used in) provided by financing activities (30,906) 199,651
Net increase (decrease) in cash, cash equivalents and restricted cash 19,673 (1,343,320)
Cash, cash equivalents and restricted cash at beginning of period 99,557 1,460,875
Cash, cash equivalents and restricted cash at end of period 119,230 117,555
Reportable Legal Entities | Parent    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 370,965 268,068
Net cash (used in) provided by investing activities (327,362) (1,854,539)
Net cash (used in) provided by financing activities (30,906) 199,651
Net increase (decrease) in cash, cash equivalents and restricted cash 12,697 (1,386,820)
Cash, cash equivalents and restricted cash at beginning of period 67,908 1,458,882
Cash, cash equivalents and restricted cash at end of period 80,605 72,062
Reportable Legal Entities | Guarantors    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 40,078 18,585
Net cash (used in) provided by investing activities (33,103) (1,362,222)
Net cash (used in) provided by financing activities 0 1,387,137
Net increase (decrease) in cash, cash equivalents and restricted cash 6,975 43,500
Cash, cash equivalents and restricted cash at beginning of period 31,649 1,993
Cash, cash equivalents and restricted cash at end of period 38,624 45,493
Reportable Legal Entities | Non-Guarantor    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 0 1
Net cash (used in) provided by investing activities (1,569) (1,151)
Net cash (used in) provided by financing activities 1,570 1,150
Net increase (decrease) in cash, cash equivalents and restricted cash 1 0
Cash, cash equivalents and restricted cash at beginning of period 0 0
Cash, cash equivalents and restricted cash at end of period 1 0
Eliminations    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 1 (1)
Net cash (used in) provided by investing activities 1,569 1,388,288
Net cash (used in) provided by financing activities (1,570) (1,388,287)
Net increase (decrease) in cash, cash equivalents and restricted cash 0 0
Cash, cash equivalents and restricted cash at beginning of period 0 0
Cash, cash equivalents and restricted cash at end of period $ 0 $ 0