4.Inventory

Inventory, net of reserves of $2,115,000 and $1,918,000 at June 30, 2018 and June 30, 2017, respectively, is comprised of the following (in thousands):

	June 30, 2018		June 30, 2017
Component parts	$	5,156	$	4,445
Work in process		3,525		3,864
Finished goods		5,148		3,157
Total	$	13,829	$	11,466

Changes in our reserve for obsolescence is as follows (in thousands):

	Beginning		Costs and					Ending
	Balance		Expenses		Charge-offs			Balance
Fiscal year ended June 30, 2018	$	1,918	$	785		(588	)	$	2,115
Fiscal year ended June 30, 2017	$	1,608	$	375	$	(65	)	$	1,918
Fiscal year ended June 30, 2016	$	1,436	$	465	$	(293	)	$	1,608