Commitments and Contingent Liabilites (Tables)

9 Months Ended

Sep. 30, 2014

Commitments and Contingent Liabilities [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

		Warranty Liability
Balance at December 31, 2013	$	7,483
Additions to warranty liability		5,758
Warranty liability utilized		(4,631)
Balance at September 30, 2014	$	8,610