Note 8 - Financing Arrangements (Details) - Expenses in Relation to Convertible Notes (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Note 8 - Financing Arrangements (Details) - Expenses in Relation to Convertible Notes [Line Items]
Amortization of deferred financing costs	$ 2,436		$ 207		$ 8,590		$ 411
Convertible Debt [Member]
Note 8 - Financing Arrangements (Details) - Expenses in Relation to Convertible Notes [Line Items]
Interest expense at 3.5% coupon rate (1)	1,050	[1]	1,050	[1]	2,100	[1]	2,100	[1]
Debt discount amortization (1)	1,095	[1]	1,019	[1]	2,170	[1]	2,020	[1]
Amortization of deferred financing costs	198		184		392		365
	$ 2,343		$ 2,253		$ 4,662		$ 4,485

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