Commitments and Contingent Liabilites (Tables)

6 Months Ended

Jun. 30, 2016

Commitments and Contingent Liabilities [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

		Warranty Liability
Balance at December 31, 2015	$	8,755
Additions to warranty liability		461
Warranty liability utilized		(467)
Balance at June 30, 2016	$	8,749

Environmental Loss Contingencies [Table Text Block]

		Environmental liability
Balance at December 31, 2015	$	6,640
Additions to environmental obligations		24
Environmental obligations utilized		(42)
Balance at June 30, 2016	$	6,622