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Subsequent Events	3 Months Ended
	Mar. 31, 2012
Subsequent Events [Abstract]
Subsequent events	12. Subsequent events On April 25, 2012, the Company announced a cash dividend of $0.11 per share (totaling $1.5 million) payable on May 25, 2012 to Class A and Class B Stockholders of record on May 11, 2012.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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