Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015
Property, Plant and Equipment, Additions	$ 102.7	$ 16.0
Property, Plant and Equipment, Disposals	$ 3.7
Minimum Percentage of Receivable Balances for creating Allowance for Doubtful Accounts	85.00%
Period for Creating Allowance for Doubtful Accounts	120 days

Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentDisposals
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration