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Condensed Consolidating Statement of Cash Flows (Unaudited) (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities $ 77,823 $ 108,479
Net cash provided by (used in) investing activities (78,000) (69,850)
Net cash provided by (used in) financing activities (20,560) (34,412)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (20,737) 4,217
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 74,137 52,183
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 53,400 56,400
Reportable Legal Entities | Parent    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities 54,278 120,543
Net cash provided by (used in) investing activities 16,075 (80,955)
Net cash provided by (used in) financing activities (81,242) (29,913)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (10,889) 9,675
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 11,109 25,745
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 220 35,420
Reportable Legal Entities | Combined Subsidiary Guarantors    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities 20,642 (12,064)
Net cash provided by (used in) investing activities (71,605) 11,105
Net cash provided by (used in) financing activities 30,664 (4,499)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (20,299) (5,458)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 40,348 26,438
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 20,049 $ 20,980
Reportable Legal Entities | Non-Guarantor Subsidiaries    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities 2,903  
Net cash provided by (used in) investing activities (22,280)  
Net cash provided by (used in) financing activities 29,828  
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 10,451  
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 22,680  
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 33,131  
Consolidating Adjustments and Other    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) investing activities (190)  
Net cash provided by (used in) financing activities $ 190