Note 13 - Guarantees and Contingencies (Detail) (USD $)	6 Months Ended	18 Months Ended	36 Months Ended			6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2010	Dec. 31, 2007	Dec. 31, 2011	Jun. 30, 2012 Workers Compensation Premium Revenue [Member]	Jun. 30, 2011 Workers Compensation Premium Revenue [Member]	Jun. 30, 2012 Professional Liability Insurance [Member]	Jun. 30, 2011 Professional Liability Insurance [Member]	Jun. 30, 2012 Coverage Amount per Incident [Member]	Jun. 30, 2012 Coverage Amount per Location [Member]
Self Insurance Reserve	$ 103,693,000	$ 103,693,000			$ 98,732,000
Direct Business Coverage Statutory Limits	1,000,000
Other Premium Revenue, Net						2,685,000	2,605,000	2,101,000	2,191,000
Primary Insurance Coverage Amount Per Incident										1,000,000
Primary Insurance Coverage Amount Per Location											3,000,000
Annual Excess Coverage		$ 4,000,000	$ 9,000,000	$ 7,500,000