Note 11 - Investment in Mortgage Servicing Rights (Details) - Risk Characteristics of Loans Being Serviced (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Original Term Thirty Year Fixed Rate [Member]
Note 11 - Investment in Mortgage Servicing Rights (Details) - Risk Characteristics of Loans Being Serviced [Line Items]
Loan Principal Balance (in Dollars)	$ 205,321
Weighted Average Interest Rate	4.37%
Weighted Average Remaining Term	303 years
Number of Loans	1,756
Original Term Fifteen Year Fixed Rate [Member]
Note 11 - Investment in Mortgage Servicing Rights (Details) - Risk Characteristics of Loans Being Serviced [Line Items]
Loan Principal Balance (in Dollars)	122,007
Weighted Average Interest Rate	3.44%
Weighted Average Remaining Term	146 years
Number of Loans	1,381
Adjustable Rate [Member]
Note 11 - Investment in Mortgage Servicing Rights (Details) - Risk Characteristics of Loans Being Serviced [Line Items]
Loan Principal Balance (in Dollars)	$ 206
Weighted Average Interest Rate	3.85%
Weighted Average Remaining Term	323 years
Number of Loans	5