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Subsequent Events	12 Months Ended
	Dec. 31, 2011
Subsequent Events [Abstract]
Subsequent events	19. Subsequent events On January 26, 2012, the Company announced a cash dividend of $0.11 per share (totaling $1.5 million) payable on February 24, 2012 to Class A and Class B Stockholders of record on February 10, 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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