Bank segment - Troubled debt restructuring that subsequently defaulted (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2014 USD ($) contract	Jun. 30, 2014 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of contracts	1	1
Recorded investment | $	$ 390	$ 390
Residential 1-4 family
Financing Receivable, Modifications [Line Items]
Number of contracts	1	1
Recorded investment | $	$ 390	$ 390