Loans Receivable, Net: Schedule of Activity in Allowance for Loan Losses by Category (Details) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Residential Real Estate
Allowance Balance at Beginning of Period	$ 1,928,625	$ 1,702,864
Provision for Loan Loss by Category	319,110,000	231,632,000
Allowance for Doubtful Accounts Receivable, Charge-offs	(226,972)	(171,039)
Allowance for Doubtful Accounts Receivable, Recoveries	9,759
Allowance Balance at End of Period	2,030,522	1,763,457
Consumer
Allowance Balance at Beginning of Period	1,498,111	1,122,055
Provision for Loan Loss by Category	(134,166,000)	24,893,000
Allowance for Doubtful Accounts Receivable, Charge-offs	(120,427)	(54,738)
Allowance for Doubtful Accounts Receivable, Recoveries	8,281	10,557
Allowance Balance at End of Period	1,251,799	1,102,767
Commercial Business
Allowance Balance at Beginning of Period	644,855	924,149
Provision for Loan Loss by Category	16,574,000	(211,990,000)
Allowance for Doubtful Accounts Receivable, Charge-offs	(188,730)	(72,811)
Allowance for Doubtful Accounts Receivable, Recoveries	525	12,078
Allowance Balance at End of Period	473,224	651,426
Commercial Real Estate
Allowance Balance at Beginning of Period	10,543,607	8,752,732
Provision for Loan Loss by Category	523,482,000	2,255,465,000
Allowance for Doubtful Accounts Receivable, Charge-offs	(2,285,896)	(1,023,274)
Allowance for Doubtful Accounts Receivable, Recoveries	147,589
Allowance Balance at End of Period	8,928,782	9,984,923
Total Loans
Allowance Balance at Beginning of Period	14,615,198	12,501,800
Provision for Loan Loss by Category	725,000,000	2,300,000,000
Allowance for Doubtful Accounts Receivable, Charge-offs	(2,822,025)	(1,321,862)
Allowance for Doubtful Accounts Receivable, Recoveries	166,154	22,635
Allowance Balance at End of Period	$ 12,684,327	$ 13,502,573