Note 1 - Organization (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Nov. 07, 2011	Nov. 01, 2011	Jan. 31, 2011	Nov. 30, 2011 Operated by Franchisees [Member] Ideal Image [Member]	Jan. 31, 2011 Onboard [Member]	Dec. 31, 2012 Ideal Image [Member]	Nov. 30, 2011 Ideal Image [Member]	Nov. 30, 2011 Cortiva [Member]
Number of Post-Secondary Schools	12								7
Number of Campuses	31								12
Business Acquisition, Cost of Acquired Entity, Purchase Price (in Dollars)		$ 33,000	$ 175,000	$ 4,500		$ 4,500	$ 162,216	$ 175,000	$ 33,000
Number of Treatment Centers					17			68
Number of States in which Entity Operates								21