Loans (Past Due Financing Receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	$ 13,327		$ 12,244
Total Loan Receivables	1,454,172		1,346,922
PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,424		3,220
Total Loan Receivables	2,424		3,220
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,438,421		1,331,458
Total Loan Receivables	1,451,748		1,343,702
31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	150		305
61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	399		829
90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	12,778		11,110
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	10,780		9,151
Total Loan Receivables	964,777		878,016
Commercial Real Estate Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,738		1,785
Total Loan Receivables	1,738		1,785
Commercial Real Estate Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	952,259		867,080
Total Loan Receivables	963,039		876,231
Commercial Real Estate Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Commercial Real Estate Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	217		677
Commercial Real Estate Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	10,563		8,474
Residential First Mortgages Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		212
Total Loan Receivables	167,710		156,709
Residential First Mortgages Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	0		466
Total Loan Receivables	0		466
Residential First Mortgages Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	167,710		156,031
Total Loan Receivables	167,710		156,243
Residential First Mortgages Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Residential First Mortgages Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		66
Residential First Mortgages Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		146
Residential Rentals Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		313
Total Loan Receivables	123,601		124,298
Residential Rentals Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	295		897
Total Loan Receivables	295		897
Residential Rentals Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	123,306		123,088
Total Loan Receivables	123,306		123,401
Residential Rentals Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		13
Residential Rentals Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		53
Residential Rentals Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		247
Construction And Land Development Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Total Loan Receivables	34,133	$ 34,100	29,705
Construction And Land Development Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loan Receivables	0		0
Construction And Land Development Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	34,133		29,705
Total Loan Receivables	34,133		29,705
Construction And Land Development Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Construction And Land Development Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Construction And Land Development Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Home Equity And Second Mortgages Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	298		413
Total Loan Receivables	36,098	36,100	35,561
Home Equity And Second Mortgages Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	391		72
Total Loan Receivables	391		72
Home Equity And Second Mortgages Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	35,409		35,076
Total Loan Receivables	35,707		35,489
Home Equity And Second Mortgages Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	98		266
Home Equity And Second Mortgages Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	23		0
Home Equity And Second Mortgages Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	177		147
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,807		866
Total Loan Receivables	63,102	$ 63,100	71,680
Commercial Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loan Receivables	0		0
Commercial Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	61,295		70,814
Total Loan Receivables	63,102		71,680
Commercial Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Commercial Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Commercial Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,807		866
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		5
Total Loan Receivables	1,104		751
Consumer Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loan Receivables	0		0
Consumer Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,104		746
Total Loan Receivables	1,104		751
Consumer Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		1
Consumer Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		4
Consumer Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0		0
Commercial Equipment Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	442		1,284
Total Loan Receivables	63,647		50,202
Commercial Equipment Portfolio Segment [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loan Receivables	0		0
Commercial Equipment Portfolio Segment [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	63,205		48,918
Total Loan Receivables	63,647		50,202
Commercial Equipment Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	52		25
Commercial Equipment Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	159		29
Commercial Equipment Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	$ 231		$ 1,230