Information Concerning Guarantor and Non-Guarantor Subsidiaries - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) | 3 Months Ended |
In Thousands, unless otherwise specified | Mar. 31, 2014 | Mar. 31, 2013 |
Condensed Financial Statements, Captions [Line Items] | ' | ' |
Net cash provided by (used in) continuing operating activities | $30,061 | ($46,911) |
Net cash provided by (used in) discontinued operating activities | -230 | 49 |
Net cash provided by (used in) operating activities | 29,831 | -46,862 |
Purchases of property and equipment | -17,484 | -10,139 |
Other investing activities | ' | 9 |
(Increase) decrease in restricted cash and cash equivalents | 9,509 | -724 |
Net cash used in investing activities - continuing operations | -7,975 | -10,854 |
Net cash used in investing activities - discontinued operations | ' | ' |
Net cash used in investing activities | -7,975 | -10,854 |
Net borrowings (repayments) under credit facility | -3,500 | 209,000 |
Early redemption of senior notes | ' | -152,180 |
Payment of dividend | -25,459 | ' |
Deferred financing costs paid | ' | -22 |
Repurchase of Company stock for retirement | ' | -55,676 |
Proceeds from exercise of stock option and purchase plans | 1,078 | 4,255 |
Excess tax benefit from stock-based compensation | 10 | 212 |
Other financing activities, net | -147 | -195 |
Net cash provided by (used in) financing activities - continuing operations | -28,018 | 5,394 |
Net cash used in financing activities - discontinued operations | ' | ' |
Net cash provided by (used in) financing activities | -28,018 | 5,394 |
Net change in cash and cash equivalents | -6,162 | -52,322 |
Cash and cash equivalents - unrestricted, beginning of period | 61,579 | 97,170 |
Cash and cash equivalents - unrestricted, end of period | 55,417 | 44,848 |
Parent Guarantor [Member] | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' |
Net cash provided by (used in) continuing operating activities | 24,395 | 203,389 |
Net cash provided by (used in) discontinued operating activities | ' | ' |
Net cash provided by (used in) operating activities | 24,395 | 203,389 |
Purchases of property and equipment | -24 | ' |
Other investing activities | ' | ' |
(Increase) decrease in restricted cash and cash equivalents | ' | ' |
Net cash used in investing activities - continuing operations | -24 | ' |
Net cash used in investing activities - discontinued operations | ' | ' |
Net cash used in investing activities | -24 | ' |
Net borrowings (repayments) under credit facility | ' | ' |
Early redemption of senior notes | ' | -152,180 |
Payment of dividend | -25,459 | ' |
Deferred financing costs paid | ' | ' |
Repurchase of Company stock for retirement | ' | -55,676 |
Proceeds from exercise of stock option and purchase plans | 1,078 | 4,255 |
Excess tax benefit from stock-based compensation | 10 | 212 |
Other financing activities, net | ' | ' |
Net cash provided by (used in) financing activities - continuing operations | -24,371 | -203,389 |
Net cash used in financing activities - discontinued operations | ' | ' |
Net cash provided by (used in) financing activities | -24,371 | -203,389 |
Net change in cash and cash equivalents | ' | ' |
Cash and cash equivalents - unrestricted, beginning of period | ' | ' |
Cash and cash equivalents - unrestricted, end of period | ' | ' |
Issuer [Member] | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' |
Net cash provided by (used in) continuing operating activities | 8,930 | -208,562 |
Net cash provided by (used in) discontinued operating activities | ' | ' |
Net cash provided by (used in) operating activities | 8,930 | -208,562 |
Purchases of property and equipment | ' | ' |
Other investing activities | ' | ' |
(Increase) decrease in restricted cash and cash equivalents | ' | ' |
Net cash used in investing activities - continuing operations | ' | ' |
Net cash used in investing activities - discontinued operations | ' | ' |
Net cash used in investing activities | ' | ' |
Net borrowings (repayments) under credit facility | -3,500 | 209,000 |
Early redemption of senior notes | ' | ' |
Payment of dividend | ' | ' |
Deferred financing costs paid | ' | -22 |
Repurchase of Company stock for retirement | ' | ' |
Proceeds from exercise of stock option and purchase plans | ' | ' |
Excess tax benefit from stock-based compensation | ' | ' |
Other financing activities, net | ' | ' |
Net cash provided by (used in) financing activities - continuing operations | -3,500 | 208,978 |
Net cash used in financing activities - discontinued operations | ' | ' |
Net cash provided by (used in) financing activities | -3,500 | 208,978 |
Net change in cash and cash equivalents | 5,430 | 416 |
Cash and cash equivalents - unrestricted, beginning of period | 714 | ' |
Cash and cash equivalents - unrestricted, end of period | 6,144 | 416 |
Guarantors [Member] | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' |
Net cash provided by (used in) continuing operating activities | 3 | 1,142 |
Net cash provided by (used in) discontinued operating activities | ' | ' |
Net cash provided by (used in) operating activities | 3 | 1,142 |
Purchases of property and equipment | -3 | -547 |
Other investing activities | ' | ' |
(Increase) decrease in restricted cash and cash equivalents | ' | ' |
Net cash used in investing activities - continuing operations | -3 | -547 |
Net cash used in investing activities - discontinued operations | ' | ' |
Net cash used in investing activities | -3 | -547 |
Net borrowings (repayments) under credit facility | ' | ' |
Early redemption of senior notes | ' | ' |
Payment of dividend | ' | ' |
Deferred financing costs paid | ' | ' |
Repurchase of Company stock for retirement | ' | ' |
Proceeds from exercise of stock option and purchase plans | ' | ' |
Excess tax benefit from stock-based compensation | ' | ' |
Other financing activities, net | ' | ' |
Net cash provided by (used in) financing activities - continuing operations | ' | ' |
Net cash used in financing activities - discontinued operations | ' | ' |
Net cash provided by (used in) financing activities | ' | ' |
Net change in cash and cash equivalents | ' | 595 |
Cash and cash equivalents - unrestricted, beginning of period | ' | -595 |
Cash and cash equivalents - unrestricted, end of period | ' | ' |
Non-Guarantors [Member] | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' |
Net cash provided by (used in) continuing operating activities | -3,267 | -42,880 |
Net cash provided by (used in) discontinued operating activities | -230 | 49 |
Net cash provided by (used in) operating activities | -3,497 | -42,831 |
Purchases of property and equipment | -17,457 | -9,592 |
Other investing activities | ' | 9 |
(Increase) decrease in restricted cash and cash equivalents | 9,509 | -724 |
Net cash used in investing activities - continuing operations | -7,948 | -10,307 |
Net cash used in investing activities - discontinued operations | ' | ' |
Net cash used in investing activities | -7,948 | -10,307 |
Net borrowings (repayments) under credit facility | ' | ' |
Early redemption of senior notes | ' | ' |
Payment of dividend | ' | ' |
Deferred financing costs paid | ' | ' |
Repurchase of Company stock for retirement | ' | ' |
Proceeds from exercise of stock option and purchase plans | ' | ' |
Excess tax benefit from stock-based compensation | ' | ' |
Other financing activities, net | -147 | -195 |
Net cash provided by (used in) financing activities - continuing operations | -147 | -195 |
Net cash used in financing activities - discontinued operations | ' | ' |
Net cash provided by (used in) financing activities | -147 | -195 |
Net change in cash and cash equivalents | -11,592 | -53,333 |
Cash and cash equivalents - unrestricted, beginning of period | 60,865 | 97,765 |
Cash and cash equivalents - unrestricted, end of period | 49,273 | 44,432 |
Eliminations [Member] | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' |
Net cash provided by (used in) continuing operating activities | ' | ' |
Net cash provided by (used in) discontinued operating activities | ' | ' |
Net cash provided by (used in) operating activities | ' | ' |
Purchases of property and equipment | ' | ' |
Other investing activities | ' | ' |
(Increase) decrease in restricted cash and cash equivalents | ' | ' |
Net cash used in investing activities - continuing operations | ' | ' |
Net cash used in investing activities - discontinued operations | ' | ' |
Net cash used in investing activities | ' | ' |
Net borrowings (repayments) under credit facility | ' | ' |
Early redemption of senior notes | ' | ' |
Payment of dividend | ' | ' |
Deferred financing costs paid | ' | ' |
Repurchase of Company stock for retirement | ' | ' |
Proceeds from exercise of stock option and purchase plans | ' | ' |
Excess tax benefit from stock-based compensation | ' | ' |
Other financing activities, net | ' | ' |
Net cash provided by (used in) financing activities - continuing operations | ' | ' |
Net cash used in financing activities - discontinued operations | ' | ' |
Net cash provided by (used in) financing activities | ' | ' |
Net change in cash and cash equivalents | ' | ' |
Cash and cash equivalents - unrestricted, beginning of period | ' | ' |
Cash and cash equivalents - unrestricted, end of period | ' | ' |