Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

Changes in the liability for product warranty and deferred revenue associated with extended warranties and service contracts were as follows (in thousands):

	Deferred Revenue
Liability at January 1, 2020	$	1,109
Settlements made during the period	(689)
Change in liability for warranties issued during the period	371
Change in liability for pre-existing warranties	—
Liability at September 30, 2020	$	791
Current liability	508
Non-current liability	283
Liability at September 30, 2020	$	791