Note 5 - Shareholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Feb. 27, 2013
Disclosure Text Block Supplement [Abstract]
Stock Repurchase Program, Authorized Amount (in Dollars)			$ 100.0
Treasury Stock, Shares, Acquired	730,000	56,000
Treasury Stock, Value, Acquired, Cost Method (in Dollars)	$ 29.5	$ 2.6
Shares Paid for Tax Withholding for Share Based Compensation	20,000	7,000