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Equity Transactions - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
1 Months Ended | 3 Months Ended | ||||||
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Mar. 31, 2013
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Dec. 28, 2012
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Sep. 28, 2012
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Jun. 29, 2012
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Mar. 30, 2012
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Mar. 31, 2012
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Mar. 31, 2013
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Mar. 31, 2012
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||||||
| Stock based compensation expenses | $ 0.8 | $ 0.3 | ||||||
| Class A and Class B common stock, dividend declared per share | $ 0.05 | $ 0.035 | $ 0.05 | |||||
| Class A and Class B common stock, dividend paid | 3.4 | 1.2 | ||||||
| Class A and Class B common stock, dividend paid per share | $ 0.05 | $ 0.035 | $ 0.035 | $ 0.035 | $ 0.035 | |||
| Class A and Class B common stock, expected annual dividend payment | $ 4.9 | $ 4.9 | ||||||
| Class A and Class B common stock, dividend declared date | Mar. 18, 2013 | Mar. 07, 2012 | Mar. 18, 2013 | |||||
| X | ||||||||||
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- Definition
Cash Dividend Paid No definition available.
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| X | ||||||||||
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- Definition
Per share dividends declared and paid during the period for each share of common stock outstanding. No definition available.
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| X | ||||||||||
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- Definition
Expected Dividend Payments No definition available.
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| X | ||||||||||
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- Definition
This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation". Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Date the dividend to be paid was declared, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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