Contingencies (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2018

Dec. 31, 2017

Loss Contingency [Abstract]

Schedule Of Product Warranties Accrual

Claims accrued but not yet paid and the related activity within the accrual for the six months ended June 30, 2018, are presented below: 

	(Dollars in thousands)
Balance as of December 31, 2017	$	349
Product warranty accruals and adjustments	1,256
Settlements	(88		)
Balance as of June 30, 2018	$	1,517

	(Dollars in thousands)
Balance as of December 31, 2015	$	388
Product warranty charges/adjustments	1,285
Payments and settlements	(704		)
Balance as of December 31, 2016	$	969
Product warranty charges/adjustments	(149		)
Payments and settlements	(471		)
Balance as of December 31, 2017	$	349