Note 16 - Equity Method Investment in Caris HealthCare, L.P. (Detail) - Summary of Financial Information of Caris (Caris [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Caris [Member]
Current assets	$ 30,894	$ 18,219	$ 20,257
Noncurrent assets	8,395	978	599
Liabilities	9,306	7,623	7,988
Partners’ capital	29,983	11,574	12,868
Revenue	57,824	44,454	43,896
Expenses	39,177	28,018	26,200
Net income	$ 18,647	$ 16,436	$ 17,696