Note 8 - Financing Arrangements (Details) - Expenses in Relation to Convertible Notes (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Expense Description
Amortization of deferred financing costs	$ 2,509		$ 211		$ 11,099		$ 622
Convertible Debt [Member]
Expense Description
Interest expense at 3.5% coupon rate (1)	1,050	[1]	1,050	[1]	3,150	[1]	3,150	[1]
Debt discount amortization (1)	1,115	[1]	1,037	[1]	3,285	[1]	3,057	[1]
Amortization of deferred financing costs	201		188		594		553
	$ 2,366		$ 2,275		$ 7,029		$ 6,760

[1] Included within "Interest expense, net" on the Condensed Consolidated Statements of Comprehensive Income.