Intangible assets (Tables)

3 Months Ended

Mar. 31, 2019

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)
	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
Trade names	$	8,234	$	(1,592	)	$	6,642	$	8,090	$	(1,447	)	$	6,643
Customer relationships	7,211		(837		)	6,374		7,114		(645		)	6,469
	$	15,445	$	(2,429	)	$	13,016	$	15,204	$	(2,092	)	$	13,112