Financing Receivables - Summary of Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan
Receivables [Abstract]
Financing receivable, modifications, number of contracts (loan) \| loan	469	446	676
Financing receivable, modifications, pre-modification recorded investment	$ 1,405	$ 2,319	$ 3,665
Financing receivable, modifications, post-modification recorded investment	$ 1,308	$ 2,109	$ 3,165
Financing receivable, modifications, subsequent default, number of contracts (loan) \| loan	143	200	360
Financing receivable, modifications, subsequent default, recorded investment	$ 487	$ 890	$ 1,352

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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- References

No definition available.

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