Share-Based Compensation Plans (Details)
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3 Months Ended | 6 Months Ended | 12 Months Ended | |
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
|
Dec. 31, 2012
|
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Restricted Stock Granted in Period | 474,050 | 1,015,273 | ||
Stock Options, Exercises in Period | 0 | 0 | ||
Stock Options, Issued in Period | 0 | 0 | ||
Non-management Director Stock Award, Granted and Vested in period | 5,100 | 4,500 | ||
Class B Common Stock Bonus [Member]
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Restricted Stock Granted in Period | 474,050 | 480,773 | ||
Restricted stock requisite service period | 3 years | |||
Class B Common Stock Key Employees [Member]
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Restricted stock requisite service period | 10 years |