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Loans and Allowance for Credit Losses - Impaired loans, by class of loan (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019 USD ($)
Unpaid Contractual Principal Balance	$ 54,883
Recorded Investment With No Allowance	35,235
Recorded Investment With Allowance	19,648
Total Recorded Investment	54,883
Related Allowance	9,124
Average Recorded Investment	54,258
Commercial
Unpaid Contractual Principal Balance	15,814
Recorded Investment With No Allowance	11,858
Recorded Investment With Allowance	3,956
Total Recorded Investment	15,814
Related Allowance	5,714
Average Recorded Investment	15,682
Income producing - commercial real estate
Unpaid Contractual Principal Balance	14,093
Recorded Investment With No Allowance	2,713
Recorded Investment With Allowance	11,380
Total Recorded Investment	14,093
Related Allowance	2,145
Average Recorded Investment	18,133
Owner occupied - Commercial real estate
Unpaid Contractual Principal Balance	7,349
Recorded Investment With No Allowance	6,388
Recorded Investment With Allowance	961
Total Recorded Investment	7,349
Related Allowance	415
Average Recorded Investment	6,107
Real estate mortgage residential
Unpaid Contractual Principal Balance	5,631
Recorded Investment With No Allowance	3,175
Recorded Investment With Allowance	2,456
Total Recorded Investment	5,631
Related Allowance	650
Average Recorded Investment	5,638
Construction - commercial and residential
Unpaid Contractual Principal Balance	11,509
Recorded Investment With No Allowance	11,101
Recorded Investment With Allowance	408
Total Recorded Investment	11,509
Related Allowance	100
Average Recorded Investment	8,211
Home equity
Unpaid Contractual Principal Balance	487
Recorded Investment With Allowance	487
Total Recorded Investment	487
Related Allowance	100
Average Recorded Investment	$ 487

X

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524

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+ References

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-Section 50
-Paragraph 14A
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