Note 3 - Aggregate Minimum Principal Maturities on Long-term Debt (Details)	Dec. 31, 2015 USD ($)
2014 Senior Credit Facility [Member]
2020	$ 0
Thereafter	556,438,000
Total	556,438,000
2020 Notes [Member]
2020	675,000,000
Thereafter	0
Total	675,000,000
2020	675,000,000
Thereafter	556,438,000
Total	$ 1,231,438,000