Annual report pursuant to Section 13 and 15(d)

Condensed Consolidating Financial Information - Condensed Consolidating Statement of Cash Flows (Details)

v3.6.0.2
Condensed Consolidating Financial Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities $ 337,843 $ 322,179 $ 409,873
Net cash (used in) provided by investing activities (905,582) (1,574,253) (1,136,657)
Net cash provided by (used in) financing activities 1,730,640 1,222,708 410,168
Net increase (decrease) in cash and cash equivalents 1,162,901 (29,366) (316,616)
Cash and cash equivalents at beginning of period 112,974 142,340 458,956
Cash and cash equivalents at end of period 1,275,875 112,974 142,340
Parent      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 336,330 344,018 388,177
Net cash (used in) provided by investing activities (905,582) (1,595,767) (1,108,241)
Net cash provided by (used in) financing activities 1,730,640 1,222,708 410,168
Net increase (decrease) in cash and cash equivalents 1,161,388 (29,041) (309,896)
Cash and cash equivalents at beginning of period 112,494 141,535 451,431
Cash and cash equivalents at end of period 1,273,882 112,494 141,535
Guarantors      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities (9,486) (21,839) 21,698
Net cash (used in) provided by investing activities (22,500) 21,514 (28,419)
Net cash provided by (used in) financing activities 33,500 0 0
Net increase (decrease) in cash and cash equivalents 1,514 (325) (6,721)
Cash and cash equivalents at beginning of period 479 804 7,525
Cash and cash equivalents at end of period 1,993 479 804
Non-Guarantor      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities (2) (2) (2)
Net cash (used in) provided by investing activities (15,472) (14,472) (18,799)
Net cash provided by (used in) financing activities 15,473 14,474 18,802
Net increase (decrease) in cash and cash equivalents (1) 0 1
Cash and cash equivalents at beginning of period 1 1 0
Cash and cash equivalents at end of period 0 1 1
Eliminations      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 11,001 2 0
Net cash (used in) provided by investing activities 37,972 14,472 18,802
Net cash provided by (used in) financing activities (48,973) (14,474) (18,802)
Net increase (decrease) in cash and cash equivalents 0 0 0
Cash and cash equivalents at beginning of period 0 0 0
Cash and cash equivalents at end of period $ 0 $ 0 $ 0