Note 12 - Subsequent Events (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended
	Sep. 30, 2014	May 16, 2014	Nov. 05, 2014 Subsequent Event [Member] Accordion Feature [Member]	Nov. 05, 2014 Subsequent Event [Member] Olson [Member]	Nov. 05, 2014 Subsequent Event [Member]
Note 12 - Subsequent Events (Details) [Line Items]
Payments to Acquire Businesses, Gross				$ 295.0
Line Of Credit Facility, Maximum Borrowing Capacity Without Borrowing Base Requirement	400.0	400.0			500.0
Line of Credit Facility, Accordion Feature, Additional Revolving Credit Commitments Under Existing Loan Facility		100.0			100.0
Line of Credit Facility, Increase (Decrease), Net			$ 100.0