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Bank segment - Troubled debt restructuring that subsequently defaulted (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) contract	Sep. 30, 2015 USD ($) contract	Sep. 30, 2016 USD ($) contract	Sep. 30, 2015 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	1	2	1
Recorded investment | $	$ 239	$ 7	$ 264	$ 7
Residential 1-4 family
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	0	1	0
Recorded investment | $	$ 239	$ 0	$ 239	$ 0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Home equity line of credit
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	1	0	1
Recorded investment | $	$ 0	$ 7	$ 0	$ 7
Residential land
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Commercial construction
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Residential construction
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Commercial loans
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0	1	0
Recorded investment | $	$ 0	$ 0	$ 25	$ 0
Consumer loans
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0

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- Definition

Financing Receivable, Troubled Debt Restructuring, Contract That Subsequently Defaulted, Value

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