Note 2 - Business Combinations - Preliminary Allocation of the Purchase Price (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Goodwill	$ 485,540	$ 379,716
Eliza Holding Corp [Member]
Cash and cash equivalents	435
Accounts receivable	10,748
Prepaid expenses	1,427
Property and equipment	1,146
Intangible assets	76,240
Goodwill	105,677
Other assets	63
Accounts payable	(2,620)
Deferred tax liability	(19,450)
Other liabilities	(2,057)
Total purchase price	$ 171,609