Student Loans - Credit Quality Indicators (Details) $ in Thousands	Jun. 30, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan
Financing Receivable, Credit Quality Indicator [Line Items]
Accrued interest	$ 10,314	$ 8,341
Student loan
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans \| loan	1,583	1,674
Loans outstanding	$ 65,935	$ 68,221
Accrued interest	$ 7,866	$ 5,984
Student loan \| School
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans \| loan	740	1,056
Loans outstanding	$ 28,806	$ 42,852
Accrued interest	$ 4,586	$ 5,494
Student loan \| Grace
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans \| loan	321	23
Loans outstanding	$ 15,161	$ 562
Accrued interest	$ 2,816	$ 81
Student loan \| Repayment
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans \| loan	307	366
Loans outstanding	$ 12,783	$ 15,526
Accrued interest	$ 99	$ 118
Student loan \| Deferment
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans \| loan	70	48
Loans outstanding	$ 2,887	$ 1,945
Accrued interest	$ 199	$ 79
Student loan \| Forbearance
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans \| loan	145	181
Loans outstanding	$ 6,298	$ 7,336
Accrued interest	$ 166	$ 212

Number of Loans

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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.

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447

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- Details

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- Details

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- Details

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- Details

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- Details

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