Note 7 - Senior and Subordinated Debt (Detail) - Senior and Subordinated Debt (Parentheticals)	Mar. 31, 2012	Sep. 30, 2012 Senior Note [Member]	Dec. 31, 2011 Senior Note [Member]	Sep. 30, 2012 Subordinated Notes [Member]	Dec. 31, 2011 Subordinated Notes [Member]	Sep. 30, 2012 Junior Subordinated Notes [Member]	Dec. 31, 2011 Junior Subordinated Notes [Member]
Interest Rate	6.95%	5.875%	5.875%	5.85%	5.85%	6.95%	6.95%