Product Warranties (Tables)

6 Months Ended

Jun. 30, 2017

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The following table represents changes in the Company’s consolidated warranty reserve:

Balance at December 31, 2016	$	18,271
Warranty expense	3,991
Warranty usage	(7,840		)
Balance at June 30, 2017	$	14,422