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Condensed Consolidating Statement of Cash Flows (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by operating activities $ 354,384 $ 322,880 $ 341,325
Net cash used in investing activities (244,589) (291,057) (124,562)
Net cash provided by (used in) financing activities (64,839) (9,869) (202,291)
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 44,956 21,954 14,472
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of year 74,137 52,183 37,711
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of year 119,093 74,137 52,183
Reportable Legal Entities | Parent      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by operating activities 284,933 243,083 276,055
Net cash used in investing activities (71,312) (109,114) (55,242)
Net cash provided by (used in) financing activities (179,303) (148,605) (206,446)
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 34,318 (14,636) 14,367
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of year 11,109 25,745 11,378
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of year 45,427 11,109 25,745
Reportable Legal Entities | Combined Subsidiary Guarantors      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by operating activities 61,845 75,011 65,270
Net cash used in investing activities (79,477) (47,940) (69,320)
Net cash provided by (used in) financing activities 22,600 (13,161) 4,155
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 4,968 13,910 105
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of year 40,348 26,438 26,333
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of year 45,316 40,348 $ 26,438
Reportable Legal Entities | Non-Guarantor Subsidiaries      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by operating activities 7,606 4,786  
Net cash used in investing activities (93,800) (134,003)  
Net cash provided by (used in) financing activities 91,864 151,897  
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 5,670 22,680  
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of year 22,680    
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of year $ 28,350 $ 22,680