Allowance For Loan Losses And Impaired Assets (Schedule Of Activity In The Allowance For Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$ 5,697	$ 5,686
Provision	360	359
Charge Offs	(282)	(457)
Recoveries	40	9
Balance, end of period	5,815	5,597
Residential Real Estate: 1-4 Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	789	738
Provision	143	7
Charge Offs	(143)	(170)
Recoveries	28	0
Balance, end of period	817	575
Residential Real Estate: Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	127	154
Provision	87	4
Charge Offs	(71)	0
Recoveries		0
Balance, end of period	143	158
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	2,794	1,981
Provision	(186)	179
Charge Offs	(44)	(191)
Recoveries		0
Balance, end of period	2,564	1,969
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	64	99
Provision	(8)	(3)
Charge Offs		(9)
Recoveries	3	6
Balance, end of period	59	93
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	1,923	2,714
Provision	324	172
Charge Offs	(24)	(87)
Recoveries	9	3
Balance, end of period	$ 2,232	$ 2,802