Note 8 - Goodwill and Intangible Assets (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Amortization of Intangible Assets	$ 4,242,000	$ 2,731,000	$ 8,130,000	$ 5,502,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	16,300,000		16,300,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	11,500,000		11,500,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	9,000,000		9,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	6,100,000		6,100,000
Finite-Lived Intangible Assets, Amortization Expense, Year Six	$ 3,200,000		3,200,000
Goodwill, Impairment Loss			0	0
Impairment of Intangible Assets (Excluding Goodwill)			$ 0	$ 0