Revenue Recognition Geographical (Tables)

3 Months Ended

Mar. 31, 2018

Geographical [Abstract]

Revenue from External Customers by Geographic Areas [Table Text Block]

Disaggregated revenue by geographic area follows:

	Three Months Ended March 31,
(Dollars in thousands)	2018		2017
United States	$	68,318	$	67,281
Canada	16,141		7,336
Consolidated total	$	84,459	$	74,617