Note 4 - Supplemental Balance Sheet Information (in thousands) (Details) - Goodwill Rollforward (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill:
Goodwill Balance	$ 1,792,000	$ 1,148,000
Purchases of Subsidiaries	8,000	644,000
Goodwill Balance	1,800,000	1,792,000
UNITED STATES
Goodwill:
Goodwill Balance	1,180,000	847,000
Purchases of Subsidiaries	8,000	333,000
Goodwill Balance	1,188,000	1,180,000
International [Member]
Goodwill:
Goodwill Balance		301,000
Purchases of Subsidiaries		311,000
Goodwill Balance	$ 612,000	$ 612,000