Recent Accounting Pronouncements (Narrative) (Details)	3 Months Ended
	Dec. 31, 2019 USD ($) security	Dec. 31, 2020 USD ($)	Mar. 01, 2019 USD ($)	Jan. 01, 2019 USD ($) Location Lease	Dec. 31, 2017 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease right of use asset	$ 11,442,000	$ 10,157,000
Operating lease liability	12,544,000	11,200,000
Retained earnings	50,891,000	70,175,000
Finance lease right of use asset	3,447,000	3,267,000
Finance lease liability	$ 3,551,000	$ 3,467,000
ASU 2019-04 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of held-to-maturity debt securities | security	113
Debt securities, held-to-maturity with an aggregate amortized cost	$ 67,096,000
Number of held-to-maturity debt securities sold | security	113
Gain (Loss) on sale of debt securities	$ 1,779,000
ASU 2016-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease right of use asset				$ 11,661,000
Operating lease liability				$ 12,866,000
Number of retail branch locations which deferred sale/lease back gain recorded | Location				2
Number of leased properties | Lease				24
Finance lease right of use asset			$ 3,597,000
Finance lease liability			$ 3,597,000
Finance Lease, Liability, Statement of Financial Position [Extensible List]			us-gaap:LongTermDebtMember
ASU 2016-02 [Member] | Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings				$ 316,000
Accounting Standards Update 2016-01 [Member] | Deferred Tax Assets [Member] | Cumulative Effect Period of Adoption Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
One-time cumulative-effect adjustment based upon adoption					$ (9,000)
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member] | Cumulative Effect Period of Adoption Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
One-time cumulative-effect adjustment based upon adoption					(44,000)
Accounting Standards Update 2016-01 [Member] | Accumulated Other Comprehensive Loss [Member] | Cumulative Effect Period of Adoption Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
One-time cumulative-effect adjustment based upon adoption					$ 35,000