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Supplemental Guarantor Condensed Consolidated Financial Statements - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
Cash flows from operations: |  |
Net income (loss) for the period | $ 12,467 | $ 2,516
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Depreciation and amortization | 7,434 | 8,019
Deferred income tax | 13,862 | (8,317)
Amortization of notes receivable | 14,086 | 14,679
Amortization of debt issuance costs | 479 | 479
Amortization of intangible assets |  | 3,244
Provision for credit losses | 178 | (308)
Share-based compensation expense | 3,966 | 3,030
Changes in operating assets and liabilities | (29,524) | (48,805)
Cash provided by (used in) operating activities | 22,948 | (25,463)
Cash flows from Investment activities |  |
Purchase of office facilities | (12,642) | (12,390)
Cash used in investing activities | (12,642) | (12,390)
Cash flows from financing activities |  |
Cash dividends paid on Class A non-voting and Class B voting common stock | (4,494) | (4,489)
Issuance of Class A non-voting common stock | 85 |
Repurchase of Class A non-voting common stock | (2,314) | (1,766)
Tax deficiency from share-based awards | (92) | (137)
Other financing activities | (33,500) | 67,100
Cash (used in) provided by financing activities | (40,315) | 60,708
Net increase (decrease) in cash and cash equivalents | (30,009) | 22,855
Cash and cash equivalents, beginning of period | 135,366 | 70,329
Cash and cash equivalents, end of period | 105,357 | 93,184
Parent [Member] |  |
Cash flows from operations: |  |
Net income (loss) for the period | (9,425) | (9,026)
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Amortization of debt issuance costs | 479 | 479
Changes in operating assets and liabilities | 15,958 | 12,991
Cash provided by (used in) operating activities | 7,012 | 4,444
Cash flows from financing activities |  |
Cash dividends paid on Class A non-voting and Class B voting common stock | (4,494) | (4,489)
Issuance of Class A non-voting common stock | 85 |
Repurchase of Class A non-voting common stock | (2,314) | (1,766)
Tax deficiency from share-based awards | (92) | (137)
Cash (used in) provided by financing activities | (6,815) | (6,392)
Net increase (decrease) in cash and cash equivalents | 197 | (1,948)
Cash and cash equivalents, beginning of period | 35 | 2,555
Cash and cash equivalents, end of period | 232 | 607
Guarantor Subsidiaries [Member] |  |
Cash flows from operations: |  |
Net income (loss) for the period | 4,809 | 4,439
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Changes in operating assets and liabilities | (13,026) | 6,119
Cash provided by (used in) operating activities | (8,217) | 10,558
Cash flows from financing activities |  |
Net increase (decrease) in cash and cash equivalents | (8,217) | 10,558
Cash and cash equivalents, beginning of period | 40,658 | 11,882
Cash and cash equivalents, end of period | 32,441 | 22,440
Non-Guarantor Subsidiaries [Member] |  |
Cash flows from operations: |  |
Net income (loss) for the period | 17,083 | 7,103
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Depreciation and amortization | 7,434 | 8,019
Deferred income tax | 13,862 | (8,317)
Amortization of notes receivable | 14,086 | 14,679
Amortization of intangible assets |  | 3,244
Provision for credit losses | 178 | (308)
Share-based compensation expense | 3,966 | 3,030
Changes in operating assets and liabilities | (32,456) | (67,915)
Cash provided by (used in) operating activities | 24,153 | (40,465)
Cash flows from Investment activities |  |
Purchase of office facilities | (12,642) | (12,390)
Cash used in investing activities | (12,642) | (12,390)
Cash flows from financing activities |  |
Other financing activities | (33,500) | 67,100
Cash (used in) provided by financing activities | (33,500) | 67,100
Net increase (decrease) in cash and cash equivalents | (21,989) | 14,245
Cash and cash equivalents, beginning of period | 94,673 | 55,892
Cash and cash equivalents, end of period | $ 72,684 | $ 70,137

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- Definition Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 8 -Article 9 + Details
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