Note 3 - Supplemental Balance Sheet Information (in thousands) (Details) - Goodwill Rollforward (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2012
Goodwill [Line Items]
Balance	$ 1,792,000	$ 1,800,000
Purchases of Subsidiaries	8,000
Balance	1,800,000	1,800,000
UNITED STATES
Goodwill [Line Items]
Balance	1,180,000	1,188,000
Purchases of Subsidiaries	8,000
Balance	1,188,000	1,188,000
International [Member]
Goodwill [Line Items]
Balance		612,000	612,000
Balance	$ 612,000	$ 612,000	$ 612,000