Note 9 - Deposits - Composition of Deposits and Related Percentage Mix of Total Deposits (Details) - USD ($)	Sep. 30, 2016	Mar. 31, 2016
Savings, amount	$ 44,839,156	$ 33,010,962
Savings, percentage	11.00%	11.00%
Noninterest-bearing checking, amount	$ 22,529,559	$ 19,747,437
Noninterest-bearing checking, percentage	5.00%	6.00%
Interest-bearing checking, amount	$ 16,705,221	$ 13,298,677
Interest-bearing checking, percentage	4.00%	4.00%
Money market accounts, amount	$ 65,927,847	$ 52,576,567
Money market accounts, percentage	16.00%	17.00%
Time deposits, amount	$ 271,173,158	$ 195,031,411
Time deposits, percentage	64.00%	62.00%
Gross deposits, amount	$ 421,174,941	$ 313,665,054
Gross deposits, percentage	100.00%	100.00%
Premium on deposits assumed, amount	$ 1,131,661	$ 328,597
Total deposits, amount	$ 422,306,602	$ 313,993,651

Percentage of non-interest-bearing domestic checkings deposit liabilities to total deposit liabilities.

No definition available.

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- Definition

Amount of premium on deposits assumed.

+ References

No definition available.

+ Details

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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- Definition

The aggregate of all domestic interest-bearing and noninterest-bearing deposit liabilities.

+ References

+ Details

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- Definition

Amount of interest-bearing domestic checking deposit liabilities.

+ References

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- Definition

Amount of interest-bearing domestic money market demand account deposit liabilities.

+ References

+ Details

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- Definition

Amount of interest-bearing domestic savings deposit liabilities. Saving deposits bear interest and have no stated maturity.

+ References

+ Details

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- Definition

Amount of interest-bearing domestic time deposits. Time deposits bear interest for a fixed, stated period of time and include certificate of deposits and individual retirement accounts.

+ References

+ Details

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- Definition

Amount of noninterest-bearing domestic checking deposit liabilities.

+ References

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- Definition

Percentage of interest-bearing domestic deposit liabilities to total deposit liabilities.

+ References

No definition available.

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Percentage of interest-bearing domestic checking demand deposit liabilities to total deposit liabilities.

+ References

No definition available.

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- Definition

Percentage of interest-bearing domestic money market demand account deposit liabilities to total deposit liabilities.

+ References

No definition available.

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- Definition

Percentage of interest-bearing domestic savings deposit liabilities to total deposit liabilities.

+ References

No definition available.

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- Definition

Percentage of interest-bearing domestic time deposit liabilities to total deposit liabilities.

+ References

No definition available.

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