Note 9 - Subsequent Events (Details) (USD $)	9 Months Ended	0 Months Ended	1 Months Ended					1 Months Ended
	Sep. 30, 2012	Nov. 04, 2013 Subsequent Event [Member] Yellowstone [Member]	Oct. 18, 2013 Subsequent Event [Member] 2020 Notes [Member]	Oct. 18, 2013 Subsequent Event [Member] Senior Credit Facility 2012 [Member]	Nov. 30, 2013 Subsequent Event [Member]	Sep. 30, 2013 2020 Notes [Member]	Dec. 31, 2012 2020 Notes [Member]	Oct. 18, 2013 Senior Credit Facility 2012 [Member]
Note 9 - Subsequent Events (Details) [Line Items]
Payments to Acquire Businesses, Gross		$ 23,000,000			$ 9,000,000
Business Acquisition, Percentage of Non-Voting Interests Acquired		99.00%
Guaranty Liabilities					3,000,000
Debt Instrument, Face Amount			375,000,000
Debt Instrument Premium Discount Percentage			102.125%
Proceeds from Issuance of Long-term Debt	3,000,000		383,000,000
Debt Instrument, Interest Rate, Effective Percentage			6.984%			7.60%	7.60%
Repayments of Senior Debt				$ 376,000,000				$ 376,000,000