Subsequent Events	12 Months Ended
Dec. 31, 2012
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Events Subsequent to December 31, 2012, Sonic’s Board of Directors authorized an additional $100.0 million to repurchase shares of Sonic’s Class A common stock. Prior to this authorization, as of December 31, 2012, our total remaining repurchase authorization was approximately $49.6 million.

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.

No definition available.

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