Note 8 - Financing Arrangements (Details) - JPM Revolving Facility, Interest Terms	1 Months Ended
	Apr. 17, 2014
Category 1 [Member] | Base Rate [Member]
Guarantor Obligations [Line Items]
Basis spread on variable rate	0.50%
Category 1 [Member] | Eurodollar [Member]
Guarantor Obligations [Line Items]
Basis spread on variable rate	1.50%
Category 2 [Member] | Base Rate [Member]
Guarantor Obligations [Line Items]
Basis spread on variable rate	0.75%
Category 2 [Member] | Eurodollar [Member]
Guarantor Obligations [Line Items]
Basis spread on variable rate	1.75%
Category 3 [Member] | Base Rate [Member]
Guarantor Obligations [Line Items]
Basis spread on variable rate	1.00%
Category 3 [Member] | Eurodollar [Member]
Guarantor Obligations [Line Items]
Basis spread on variable rate	2.00%