Intangible assets (Tables)

9 Months Ended

Sep. 30, 2018

Intangible Assets [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The gross carrying amount and accumulated amortization by intangible asset class were as follows:

	(Dollars in thousands)
	September 30, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
Trade names	$	7,994	$	(1,341	)	$	6,653	$	8,182	$	(957	)	$	7,225
Customer relationships	4,785		(537		)	4,248		4,911		(323		)	4,588
	$	12,779	$	(1,878	)	$	10,901	$	13,093	$	(1,280	)	$	11,813