Note 10 - Investment Securities (Details) - Available for Sale Securities (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities amortized cost	$ 2,209,613	$ 2,217,032
Available for sale securities gross unrealized gains	0	6,000
Available for sale securities gross unrealized losses	(130,000)	(16,000)
Available for sale securities fair value	2,079,362	2,207,018
Federal Home Loan Bank Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities amortized cost	1,500,000	1,500,000
Available for sale securities gross unrealized gains	0	1,000
Available for sale securities gross unrealized losses	(76,000)	(5,000)
Available for sale securities fair value	1,424,000	1,496,000
Federal National Mortgage Association [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities amortized cost	500,000	500,000
Available for sale securities gross unrealized gains	0	0
Available for sale securities gross unrealized losses	(51,000)	(11,000)
Available for sale securities fair value	449,000	489,000
Mutual Fund Shares [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities amortized cost	210,000	217,000
Available for sale securities gross unrealized gains	0	5,000
Available for sale securities gross unrealized losses	(3,000)
Available for sale securities fair value	$ 207,000	$ 222,000