Allowance For Loan Losses And Impaired Assets (Schedule Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Mar. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	$ 12,591	$ 12,660
Recorded investment with related allowance	8,347	2,651
Recorded investment	20,938	15,311
Unpaid principal balance with no related allowance	15,239	13,530
Unpaid principal balance with related allowance	8,410	2,784
Unpaid principal balance	23,649	16,314
Related allowance	2,053	594
Average recorded investment with no related allowance	12,626	10,011
Average recorded investment with related allowance	5,499	7,468
Average recorded investment	18,125	17,479
Interest income with no related allowance	112	707
Interest income with related allowance	104	137
Interest income recognized	216	844
Residential Real Estate: 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	4,806
Unpaid principal balance	5,421
Related allowance	358
Average recorded investment	3,027
Interest income recognized	46
Residential Real Estate: Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	218
Unpaid principal balance	219
Average recorded investment with no related allowance		184
Average recorded investment	109
Interest income recognized	2
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance		8,510
Recorded investment	9,905
Unpaid principal balance with no related allowance		8,590
Unpaid principal balance	11,083
Related allowance	861
Average recorded investment with no related allowance		5,458
Average recorded investment	9,933
Interest income with no related allowance		501
Interest income recognized	114
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	3,431
Recorded investment	5,961
Unpaid principal balance with no related allowance	4,344
Unpaid principal balance	6,874
Related allowance	834
Average recorded investment with no related allowance	3,323
Average recorded investment	5,032
Interest income with no related allowance	25
Interest income recognized	54
Residential Real Estate: 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	2,654
Recorded investment with related allowance	2,152	311
Recorded investment		1,247
Unpaid principal balance with no related allowance	3,206
Unpaid principal balance with related allowance	2,215	389
Unpaid principal balance		1,362
Related allowance	358	15
Average recorded investment with no related allowance	1,795
Average recorded investment with related allowance	1,232	1,470
Average recorded investment		3,313
Interest income with no related allowance	25
Interest income with related allowance	21	20
Interest income recognized		64
Residential Real Estate: 1-4 Family [Member] | Residential Real Estate: 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance		936
Unpaid principal balance with no related allowance		973
Average recorded investment with no related allowance		1,843
Interest income with no related allowance		44
Residential Real Estate: Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	218
Unpaid principal balance with no related allowance	219
Average recorded investment with no related allowance	109
Average recorded investment		184
Interest income with no related allowance	2
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	6,240
Recorded investment with related allowance	3,665	1,451
Recorded investment		9,961
Unpaid principal balance with no related allowance	7,418
Unpaid principal balance with related allowance	3,665	1,482
Unpaid principal balance		10,072
Related allowance	861	207
Average recorded investment with no related allowance	7,375
Average recorded investment with related allowance	2,558	3,792
Average recorded investment		9,250
Interest income with no related allowance	60
Interest income with related allowance	54	72
Interest income recognized		573
Consumer Loan [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	48
Recorded investment	48
Unpaid principal balance with no related allowance	52
Unpaid principal balance	52
Average recorded investment with no related allowance	24	44
Average recorded investment with related allowance		50
Average recorded investment	24	94
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance		3,214
Recorded investment with related allowance	2,530	889
Recorded investment		4,103
Unpaid principal balance with no related allowance		3,967
Unpaid principal balance with related allowance	2,530	913
Unpaid principal balance		4,880
Related allowance	834	372
Average recorded investment with no related allowance		2,482
Average recorded investment with related allowance	1,709	2,156
Average recorded investment		4,638
Interest income with no related allowance		162
Interest income with related allowance	29	45
Interest income recognized		$ 207