Commitments and Contingent Liabilites (Tables)

3 Months Ended

Mar. 31, 2017

Commitments and Contingent Liabilities [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

		Warranty Liability
Balance at December 31, 2016	$	10,154
Additions to warranty liability		198
Warranty liability utilized		(148)
Balance at March 31, 2017	$	10,204

Environmental Loss Contingencies [Table Text Block]

		Environmental liability
Balance at December 31, 2016	$	6,270
Additions to environmental obligations		2
Environmental obligations utilized		(21)
Balance at March 31, 2017	$	6,251