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Fair value measurement - Assets measured at fair value on nonrecurring basis - Parenthetical (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Hurricane
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned - Write down	$ 2.7

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- References

No definition available.

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Balance Type:	debit
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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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- Details

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