Number of Loans

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Balance Type:	credit
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- Definition

Amount of financing receivable modified as troubled debt restructuring.

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- Definition

The net amount of operating interest income (expense).

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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- Definition

Amount, before allowance for credit loss, of financing receivable.

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Student Loans - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
Student Loans - Narrative (Details)	Sep. 30, 2019 USD ($) loan	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) loan	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) loan	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest	$ 10,522,000		$ 10,522,000		$ 8,341,000
Allowance for losses	8,230,000	$ 8,798,000	8,230,000	$ 8,798,000	8,395,000	$ 8,452,000	$ 8,425,000	$ 9,267,000
TDRs	5,296,000	7,402,000	5,296,000	7,402,000	7,059,000	$ 6,183,000	$ 7,640,000	$ 11,362,000
Accrued interest receivable, charged against interest income	(9,356,000)	$ (8,863,000)	(28,118,000)	$ (24,965,000)
Student loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding	65,655,000		65,655,000		68,221,000
Accrued interest	$ 8,176,000		$ 8,176,000		$ 5,984,000
Number of loans \| loan	1,560		1,560		1,674
Allowance for losses	$ 2,088,000		$ 2,088,000		$ 1,520,000
TDRs	0		0		0
Accrued interest receivable, charged against interest income			20,000		26,000
Charge-off of loans			338,000		388,000
Student loan \| Not yet entered repayment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest	$ 8,056,000		$ 8,056,000		$ 5,866,000
Student loan \| Repayment, Deferment, and Forbearance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans \| loan	570		570		595
Student loan \| Repayment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding	$ 14,421,000		$ 14,421,000		$ 15,526,000
Accrued interest	$ 120,000		$ 120,000		$ 118,000
Number of loans \| loan	328		328		366
Student loan \| Deferment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding	$ 2,158,000		$ 2,158,000		$ 1,945,000
Accrued interest	$ 108,000		$ 108,000		$ 79,000
Number of loans \| loan	73		73		48
Student loan \| Forbearance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding	$ 6,980,000		$ 6,980,000		$ 7,336,000
Accrued interest	$ 134,000		$ 134,000		$ 212,000
Number of loans \| loan	169		169		181