Note 5 - Stockholders' Equity (Details) (Common Class A [Member], USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended	0 Months Ended	1 Months Ended
	Sep. 30, 2013 Scenario, Forecast [Member]	Dec. 11, 2012	Dec. 31, 2012
Note 5 - Stockholders' Equity (Details) [Line Items]
Stock Repurchase Program, Authorized Amount (in Dollars)		$ 100.0
Common Stock, Dividends, Per Share, Declared	$ 0.25		$ 1.00