Allowance For Loan Losses And Impaired Assets (Schedule Of Balance In The Allowance For Loan Losses By Portfolio Segment) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, individually evaluated for impairment	$ 2,053	$ 594
Allowance for loan losses, collectively evaluated for impairment	3,762	5,103
Total Allowance for loan losses	5,815	5,697	5,597	5,686
Individually Evaluated for Impairment, Loan balances	8,347	15,311
Collectively Evaluated for Impairment, Loan balances	555,947	541,546
Total loan balances	564,294	556,857
Residential Real Estate: 1-4 Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, individually evaluated for impairment	358	15
Allowance for loan losses, collectively evaluated for impairment	459	774
Total Allowance for loan losses	817	789	575	738
Individually Evaluated for Impairment, Loan balances	2,152	1,247
Collectively Evaluated for Impairment, Loan balances	119,064	124,389
Total loan balances	121,216	125,636
Residential Real Estate: Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, collectively evaluated for impairment	143	127
Total Allowance for loan losses	143	127	158	154
Collectively Evaluated for Impairment, Loan balances	36,078	37,724
Total loan balances	36,078	37,724
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, individually evaluated for impairment	861	207
Allowance for loan losses, collectively evaluated for impairment	1,703	2,587
Total Allowance for loan losses	2,564	2,794	1,969	1,981
Individually Evaluated for Impairment, Loan balances	3,665	9,961
Collectively Evaluated for Impairment, Loan balances	295,701	279,096
Total loan balances	299,366	289,057
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, collectively evaluated for impairment	59	64
Total Allowance for loan losses	59	64	93	99
Collectively Evaluated for Impairment, Loan balances	9,639	9,772
Total loan balances	9,639	9,772
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, individually evaluated for impairment	834	372
Allowance for loan losses, collectively evaluated for impairment	1,398	1,551
Total Allowance for loan losses	2,232	1,923	2,802	2,714
Individually Evaluated for Impairment, Loan balances	2,530	4,103
Collectively Evaluated for Impairment, Loan balances	95,465	90,565
Total loan balances	$ 97,995	$ 94,668