Loans And Related Allowance For Loan Losses (Summary Of Performing And Non-Performing Loans) (Details) - USD ($)	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	$ 112,574,722	$ 106,105,315
Nonperforming Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net		36,263
Performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	24,178,966	23,559,017
Total Performing And Non-performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	24,178,966	23,595,280
One-To-Four Family Real Estate - Owner Occupied [Member] \| Nonperforming Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net		36,263
One-To-Four Family Real Estate - Owner Occupied [Member] \| Performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	22,080,808	21,519,959
One-To-Four Family Real Estate - Owner Occupied [Member] \| Total Performing And Non-performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	22,080,808	21,556,222
Home Equity And Second Mortgages [Member] \| Performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	1,957,927	1,880,546
Home Equity And Second Mortgages [Member] \| Total Performing And Non-performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	1,957,927	1,880,546
Secured Loans [Member] \| Performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	140,231	158,512
Secured Loans [Member] \| Total Performing And Non-performing Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	$ 140,231	$ 158,512

Eureka Financial Corp. 10-K