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Condensed Supplemental Consolidating Statement of Cash Flows (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities $ 94,618 $ 71,036
Cash flows from investing activities:    
Additions to property, plant and equipment (30,019) (29,839)
Additions to other intangible assets (4,302) (6,183)
Acquisition of business, net of cash acquired (25,000) 3,243
Proceeds from sale of fixed assets 46 56
Net cash used in investing activities (59,275) (32,723)
Cash flows from financing activities:    
Borrowings under revolving credit facility 198,900 125,600
Payments under revolving credit facility (160,400) (162,200)
Payments on capitalized lease obligations (1,033) (599)
Excess tax benefits from stock-based compensation 2,440 3,671
Net payments related to stock-based award activities (3,878) (9,394)
Net cash provided by (used in) financing activities 36,029 (42,922)
Effect of exchange rate changes on cash and cash equivalents (407) 633
Net increase (decrease) in cash and cash equivalents 70,965 (3,976)
Cash and cash equivalents, beginning of period 3,279 6,323
Cash and cash equivalents, end of period 74,244 2,347
Parent Company
   
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities (22,807) (34,017)
Cash flows from investing activities:    
Additions to property, plant and equipment 607 (1,518)
Additions to other intangible assets (4,302) (4,035)
Net cash used in investing activities (3,695) (5,553)
Cash flows from financing activities:    
Borrowings under revolving credit facility 198,900 125,600
Payments under revolving credit facility (160,400) (162,200)
Intercompany transfer (10,560) 81,893
Excess tax benefits from stock-based compensation 2,440 3,671
Net payments related to stock-based award activities (3,878) (9,394)
Net cash provided by (used in) financing activities 26,502 39,570
Guarantor Subsidiaries
   
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities 41,104 108,219
Cash flows from investing activities:    
Additions to property, plant and equipment (25,526) (26,873)
Additions to other intangible assets   (2,148)
Acquisition of business, net of cash acquired (25,000) 3,243
Proceeds from sale of fixed assets 46 56
Net cash used in investing activities (50,480) (25,722)
Cash flows from financing activities:    
Payments on capitalized lease obligations (1,033) (599)
Intercompany transfer 10,560 (81,893)
Net cash provided by (used in) financing activities 9,527 (82,492)
Net increase (decrease) in cash and cash equivalents 151 5
Cash and cash equivalents, beginning of period 6 6
Cash and cash equivalents, end of period 157 11
Non-Guarantor Subsidiaries
   
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by operating activities 76,321 (3,166)
Cash flows from investing activities:    
Additions to property, plant and equipment (5,100) (1,448)
Net cash used in investing activities (5,100) (1,448)
Cash flows from financing activities:    
Effect of exchange rate changes on cash and cash equivalents (407) 633
Net increase (decrease) in cash and cash equivalents 70,814 (3,981)
Cash and cash equivalents, beginning of period 3,273 6,317
Cash and cash equivalents, end of period $ 74,087 $ 2,336