2. Inventories, net

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

2. Inventories, net

Inventories, which are presented net of allowance for obsolete and slow-moving inventory, consisted of the following:

	December 31,
	2018		2017
Finished goods	$	2,004	$	2,825
Work in process		5,750		7,111
Raw materials		3,712		4,422
	$	11,466	$	14,358

Changes in the allowance for obsolete and slow-moving inventory are as follows:

	Years Ended December 31,
	2018			2017
Balance, beginning of year	$	789		$	1,607
Charged to cost of sales		(38	)		149
Disposal of inventory		(122	)		(967	)
Balance, end of year	$	629		$	789

Following leadership changes, in the third quarter of 2017, the Company launched a comprehensive evaluation of its products, markets and strategies through the remainder of the year. As a result of this evaluation, the Company recognized a direct charge to cost of products of $3,200 to write-off inventory with limited customer market opportunities, primarily due to concerns regarding technology and production costs.

For the years ended December 31, 2018 and 2017, the Company wrote off obsolete inventory that had been fully allowed for previously, which had no material impact to the Company’s consolidated balance sheets or consolidated statements of operations.