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Loans - Major Classifications - Loan Concentrations (Details) - Total real estate - Loan receivables - Customer concentration risk	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018
Loans
Credit risk as a percentage of benchmark	78.00%
Loans receivable as a percentage of total portfolio		78.10%

X

- Definition

Represents the percentage of total portfolio that is represented by a particular financial receivable category.

+ References

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

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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