| **CONSOLIDATED INCOME STATEMENTS (Unaudited) (USD $)In Thousands, except Per Share data** | 3 Months Ended | 9 Months Ended |
|-------------------------------------------------------------------------------------------|----------------|----------------|
||
| Revenues                                                                                  | $ 177,703      | $ 171,509      | $ 510,569 | $ 486,254 |
| Cost of goods sold (exclusive of depreciation and amortization shown separately below)    | 60,664         | 52,486         | 171,734 | 153,147 |
| Selling, general and administrative expenses                                              | 54,453         | 58,532         | 171,043 | 166,493 |
| Depreciation and amortization expense                                                     | 30,702         | 30,288         | 93,054 | 92,234 |
| Operating income                                                                          | 31,884         | 30,203         | 74,738 | 74,380 |
| **Other income (expense):**                                                               |           |           |   |   |
| Interest expense (including amortization of deferred loan fees)                           | (16,678)       | (17,760)       | (51,424) | (53,169) |
| Loss on extinguishment of debt                                                            | 0              | 0              | (9,111) | 0 |
| Interest income                                                                           | 22             | 99             | 30 | 236 |
| Other                                                                                     | 59             | 0              | 92 | 0 |
| Other expense, net                                                                        | (16,715)       | (17,661)       | (60,597) | (52,933) |
| Income before income tax expense                                                          | 15,169         | 12,542         | 14,141 | 21,447 |
| Income tax expense                                                                        | (7,959)        | (4,959)        | (7,403) | (10,260) |
| Net income                                                                                | $ 7,210        | $ 7,583        | $ 6,738 | $ 11,187 |
| Class A                                                                                   |           |           |   |   |
| **Net income per common share**                                                           |           |           |   |   |
| Basic                                                                                     | $ 0.16         | $ 0.14         | $ 0.15 | $ 0.2 |
| Diluted                                                                                   | $ 0.15         | $ 0.14         | $ 0.13 | $ 0.2 |
| Class B                                                                                   |           |           |   |   |
| **Net income per common share**                                                           |           |           |   |   |
| Basic                                                                                     | $ 0.16         | $ 0.14         | $ 0.15 | $ 0.2 |
| Diluted                                                                                   | $ 0.15         | $ 0.14         | $ 0.13 | $ 0.2 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate cost of goods produced and sold and services rendered during the reporting period.
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| - Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.
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| - Definition
The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
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| - Definition
Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.
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| - Definition
The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.
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| - Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period.
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| - Definition
Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.
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| - Definition
The aggregate amount of income (expense) from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
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The net result for the period of deducting operating expenses from operating revenues.
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| - Definition
Any other expense items resulting from secondary business-related activities, excluding those considered part of the normal operations of the business that have not been previously categorized.
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| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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| - Definition
Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.
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| - Definition
The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.
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