Product Warranties (Tables)

6 Months Ended

Jun. 30, 2016

Product Warranties [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, 2015	$	20,975
Warranty expense	4,199
Warranty usage	(6,728		)
Balance at June 30, 2016	$	18,446