CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 27, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 66,695	$ 65,989
Accounts receivable, net	100,905	81,795
Inventories	28,970	25,638
Prepaid expenses and other current assets	40,317	23,280
Total current assets	236,887	196,702
Property and equipment, net	18,901	22,321
Operating lease right-of-use assets	27,694
Goodwill	238,734	240,618
Intangibles, net	6,518	12,817
Other long-term assets	39,472	38,377
Total assets	568,206	510,835
Current liabilities:
Other debts and finance lease obligations, current	6,962	7,175
Accounts payable	31,227	33,778
Income taxes payable	1,128	1,099
Deferred revenue	47,873	41,592
Accrued and other current liabilities	59,260	52,761
Total current liabilities	146,450	136,405
Convertible notes, long-term	130,217	114,808
Other debts and finance lease obligations, long-term	10,384	12,684
Income taxes payable, long-term	269	460
Other non-current liabilities	39,836	18,228
Total liabilities	327,156	282,585
Commitments and contingencies (Note 17)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value, 150,000 shares authorized; 90,315 and 87,057 shares issued and outstanding at September 27, 2019 and December 31, 2018, respectively	90	87
Additional paid-in capital	2,323,839	2,296,795
Accumulated deficit	(2,077,510)	(2,067,416)
Accumulated other comprehensive loss	(5,369)	(1,216)
Total stockholders’ equity	241,050	228,250
Total liabilities and stockholders’ equity	$ 568,206	$ 510,835