Loans (Financing receivables, non accrual status) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Nonaccrual loans	$ 60,644	$ 58,272
Nonaccrual troubled debt restructured loans	4,162	4,309
Total nonaccrual loans	64,806	62,581
Accruing loans past due 90 days or more	22	830
Performing troubled debt restructured loans	$ 3,206	$ 6,617

Financing Receivable, Modifications, Recorded Investment, Nonaccrual Status

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- Definition

Financing Receivable, Modifications, Recorded Investment, Performing

+ References

No definition available.

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- Definition

Nonaccrual Loans

+ References

No definition available.

+ Details

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- References

No definition available.

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