9. Securities: Schedule of held-to-maturity securities in an unrealized loss position (Details) (USD $)	Sep. 30, 2012	Mar. 31, 2012
SBA Bonds
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 3,647,501
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	29,730
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	3,647,501
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	29,730
Mortgage-Backed Securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	3,229,093
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	45,853
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	3,229,093
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	45,853
Total Securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	6,876,594	10,448,376
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	75,583	86,074
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	6,876,594	10,448,376
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	75,583	86,074
FHLB Securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		4,532,636
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		13,517
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value		4,532,636
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses		13,517
Federal Farm Credit Securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		976,590
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		23,410
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value		976,590
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses		23,410
FNMA and FHLMC Bonds
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		4,939,150
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		49,147
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value		4,939,150
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses		$ 49,147