Note 11 - Fair Value (Detail) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (USD $)	Mar. 31, 2013	Dec. 31, 2012
2013
Loans secured by trust deeds	$ 44,137,700	$ 45,844,365
Real estate properties:
Real estate properties	56,135,028	56,173,094
Commercial [Member] | Fair Value, Inputs, Level 3 [Member]
2013
Loans secured by trust deeds	630,909	632,795
Real estate properties:
Real estate properties	2,174,087	2,174,087
Commercial [Member]
2013
Loans secured by trust deeds	630,909	632,795
Real estate properties:
Real estate properties	2,174,087	2,174,087
Condominiums [Member] | Fair Value, Inputs, Level 3 [Member]
2013
Loans secured by trust deeds	4,339,200	4,339,200
Real estate properties:
Real estate properties	8,517,932	8,517,932
Condominiums [Member]
2013
Loans secured by trust deeds	4,339,200	4,339,200
Real estate properties:
Real estate properties	8,517,932	8,517,932
Improved and unimproved land [Member] | Fair Value, Inputs, Level 3 [Member]
2013
Loans secured by trust deeds	6,777,600	6,184,845
Real estate properties:
Real estate properties	15,168,546	15,183,504
Improved and unimproved land [Member]
2013
Loans secured by trust deeds	6,777,600	6,184,845
Real estate properties:
Real estate properties	15,168,546	15,183,504
Single-family [Member] | Fair Value, Inputs, Level 3 [Member]
Real estate properties:
Real estate properties	35,465	78,531
Single-family [Member]
Real estate properties:
Real estate properties	35,465	78,531
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
2013
Loans secured by trust deeds	11,747,709	11,156,840
Real estate properties:
Real estate properties	25,896,030	25,954,054
Fair Value, Measurements, Nonrecurring [Member]
2013
Loans secured by trust deeds	11,747,709	11,156,840
Real estate properties:
Real estate properties	$ 25,896,030	$ 25,954,054