Supplementary Balance Sheet Information

3 Months Ended

Mar. 30, 2018

8. Supplementary Balance Sheet Information

The following tables provide the details of selected balance sheet items as of the periods indicated (in thousands):

Inventories

	March 30,		December 31,
	2018		2017
Raw materials	$	64,228	$	57,277
Work-in-process		15,478		14,847
Finished goods		16,140		16,443
Demo and consigned inventory		2,966		2,711
Total inventories	$	98,812	$	91,278

Accrued Expenses and Other Current Liabilities

	March 30,		December 31,
	2018		2017
Accrued compensation and benefits	$	15,004	$	17,348
Accrued warranty		5,054		4,835
Customer deposits		3,521		3,634
Other		14,663		17,497
Total	$	38,242	$	43,314

Accrued Warranty

	Three Months Ended
	March 30, 2018			March 31, 2017
Balance at beginning of the period	$	4,835		$	3,142
Provision charged to cost of revenue		722			799
Warranty liabilities acquired from acquisitions		—			419
Use of provision		(560	)		(442	)
Foreign currency exchange rate changes		57			7
Balance at end of period	$	5,054		$	3,925