Inventories

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

(3) Inventories

	December 31,
	2019		2018
Raw materials and component parts	$	71,895	$	67,508
Finished goods		95,914		94,270
	$	167,809	$	161,778

Overhead included in inventory aggregated $4.3 million and $4.2 million as of December 31, 2019 and 2018, respectively. Included in inventories is an inventory reserve, which represents the difference between the cost of the inventory and its estimated realizable value, based upon sales forecasts and the physical condition of the inventories. In addition, and as necessary, specific reserves for future known or anticipated events may be established. Inventory reserves aggregated $4.9 million as of December 31, 2019 and 2018.