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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2012
Subsequent Events [Abstract]
Subsequent Events	K. Subsequent Events On May 1, 2012, our Board of Directors declared a special dividend of $0.25 per share to all of its Class A and Class B shareholders in addition to its quarterly dividend of $0.04 per share payable on June 26, 2012 to its Class A and Class B shareholders of record on June 12, 2012. On May 1, 2012 our Board of Directors authorized the Company to renew its shelf registration, before the expiration of its current shelf in July 2012, that will allow it to issue up to $500 million in a combination of senior and subordinated debt securities, convertible debt securities and common and preferred securities.