Loans (Troubled debt narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($) loan
Financing Receivable, Recorded Investment [Line Items]
Principal deferment collected from government guarantees	$ 356
Capitalized interest and escrow	$ 66
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Number of loan relationships | loan	0