Other Assets - Retained Interest Investments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Investments
Retained interest investments	$ 11,536	$ 11,147
Retained interest investments
Investments
Expected amount to receive upon maturity of note after payment of note and any other liabilities	$ 16,900
Promissory notes maturity period	15 years
Minimum \| Retained interest investments
Investments
Notes maturity year	2022
Maximum \| Retained interest investments
Investments
Notes maturity year	2024

- Definition

Period of time between issuance and maturity of note, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

The expected net interest payment and principal amount of promissory note.

+ References

No definition available.

+ Details

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- Definition

Period of time between issuance and maturity of note receivable, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

The carrying value of interest investment continued to be held by a transferor after transferring financial assets to a third party.

+ References

No definition available.

+ Details

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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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