Loans Receivable, Net - Impaired Loans (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($)
Loans with a specific valuation allowance
Recorded balance	$ 5,388
Unpaid principal balance	5,388
Specific valuation allowance	95
Average balance	10,378
Loans without a specific valuation allowance
Recorded balance	89,116
Unpaid principal balance	99,355
Average balance	93,338
Recorded balance	94,504
Unpaid principal balance	104,743
Average balance	103,716
Residential Real Estate \| Residential real estate
Loans with a specific valuation allowance
Recorded balance	0
Unpaid principal balance	0
Specific valuation allowance	0
Average balance	409
Loans without a specific valuation allowance
Recorded balance	7,804
Unpaid principal balance	9,220
Average balance	9,879
Recorded balance	7,804
Unpaid principal balance	9,220
Average balance	10,288
Commercial \| Commercial Real Estate
Loans with a specific valuation allowance
Recorded balance	5,343
Unpaid principal balance	5,343
Specific valuation allowance	73
Average balance	6,341
Loans without a specific valuation allowance
Recorded balance	53,266
Unpaid principal balance	57,735
Average balance	59,107
Recorded balance	58,609
Unpaid principal balance	63,078
Average balance	65,448
Commercial \| Other Commercial
Loans with a specific valuation allowance
Recorded balance	10
Unpaid principal balance	10
Specific valuation allowance	10
Average balance	3,490
Loans without a specific valuation allowance
Recorded balance	21,465
Unpaid principal balance	24,758
Average balance	18,079
Recorded balance	21,475
Unpaid principal balance	24,768
Average balance	21,569
Consumer and Other \| Home Equity
Loans with a specific valuation allowance
Recorded balance	0
Unpaid principal balance	0
Specific valuation allowance	0
Average balance	24
Loans without a specific valuation allowance
Recorded balance	3,745
Unpaid principal balance	4,494
Average balance	3,486
Recorded balance	3,745
Unpaid principal balance	4,494
Average balance	3,510
Consumer and Other \| Other Consumer
Loans with a specific valuation allowance
Recorded balance	35
Unpaid principal balance	35
Specific valuation allowance	12
Average balance	114
Loans without a specific valuation allowance
Recorded balance	2,836
Unpaid principal balance	3,148
Average balance	2,787
Recorded balance	2,871
Unpaid principal balance	3,183
Average balance	$ 2,901

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

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