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Stockholders' Equity - Additional Information (Detail)
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3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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| Noncontrolling Interest [Abstract] | ||||
| Certain Class B stockholders converted into Class A | 88,160 | 0 | 104,396 | 22,880 |
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- Definition
The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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