CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 112,388	$ 67,770
Marketable securities	62,684	109,589
Accounts receivable, less allowance of $691 in 2018 and $460 in 2017	64,194	65,283
Inventories	96,820	67,521
Income taxes receivable	6,111	7,220
Prepaid expenses and other current assets	8,710	4,699
Total current assets	350,907	322,082
Property, plant and equipment, net	18,874	17,342
Goodwill	22,495	22,495
Identifiable intangible assets, net	7,448	8,632
Deferred income taxes	12,810	14,879
Other assets	5,506	492
Total assets	418,040	385,922
Current liabilities:
Accounts payable	16,981	13,471
Accrued liabilities:
Payroll and related expenses	10,648	10,408
Royalties	611	494
Warranty	2,441	2,427
Deferred revenue	6,767	6,223
Other current liabilities	7,543	9,284
Total current liabilities	44,991	42,307
Other non-current liabilities	11,161	10,461
Total liabilities	56,152	52,768
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized, no shares issued and outstanding at December 31, 2018 and 2017
Common stock, $0.001 par value, 100,000 shares authorized, 30,906 and 31,604 issued and outstanding at December 31, 2018 and 2017, respectively.	31	32
Additional paid-in capital	369,893	386,196
Accumulated other comprehensive loss	(1,263)	(1,205)
Accumulated deficit	(6,773)	(51,869)
Total stockholders’ equity	361,888	333,154
Total liabilities and stockholders’ equity	$ 418,040	$ 385,922