Note 9 - Loans (Details) - Loans by Credit Quality Indicator (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 87,220	$ 89,570
Residential (One to Four Family) Real Estate [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	62,635
Residential (One to Four Family) Real Estate [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	304
Residential (One to Four Family) Real Estate [Member] \| Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	145
Residential (One to Four Family) Real Estate [Member] \| Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,194
Residential (One to Four Family) Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	65,278	66,598
Multi-Family and Commercial Real Estate [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	7,558
Multi-Family and Commercial Real Estate [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	172
Multi-Family and Commercial Real Estate [Member] \| Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	464
Multi-Family and Commercial Real Estate [Member] \| Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,318
Multi-Family and Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	11,512	12,402
Commercial Loan [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	649
Commercial Loan [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	251
Commercial Loan [Member] \| Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	34
Commercial Loan [Member] \| Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	186
Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,120	1,166
Home Equity Line of Credit [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	8,289
Home Equity Line of Credit [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Home Equity Line of Credit [Member] \| Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Home Equity Line of Credit [Member] \| Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	49
Home Equity Line of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	8,338	8,361
Consumer Loan [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	922
Consumer Loan [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Consumer Loan [Member] \| Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Consumer Loan [Member] \| Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	922	960
Construction [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Construction [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Construction [Member] \| Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0
Construction [Member] \| Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	50
Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	50	83
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	80,053
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	727
Classified Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	643
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 5,797

Delanco Bancorp, Inc 10-Q