Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 230,697	$ 260,232
Short-term investments	0	59,923
Accounts receivable, net	279,196	266,869
Inventories, net	236,733	194,012
Prepaid expenses and other current assets	89,152	68,470
Total current assets	835,778	849,506
Property and equipment, net	248,712	254,399
Goodwill	480,489	467,547
Intangible assets, net	136,938	172,719
Operating lease right-of-use assets	56,644	67,674
Other long-term assets	79,850	72,643
Total assets	1,838,411	1,884,488
Liabilities and stockholders' equity
Accounts payable and accrued expenses	63,568	51,124
Accrued compensation	87,802	87,068
Deferred revenue - current	120,762	132,151
Operating lease liabilities - current	12,360	15,801
Other taxes payable	43,673	48,129
Debt, current	0	5,000
Other current liabilities	25,162	42,578
Total current liabilities	353,327	381,851
Deferred income taxes	26,023	25,288
Income tax payable - non-current	54,195	61,623
Deferred revenue - non-current	32,278	36,335
Operating lease liabilities - non-current	29,206	35,854
Debt, non-current	100,000	92,036
Other long-term liabilities	16,910	26,630
Total liabilities	611,939	659,617
Commitments and contingencies
Stockholders' equity:
Preferred stock:  par value $0.01;  5,000,000 shares authorized; none issued and outstanding	0	0
Common stock:  par value $0.01;  360,000,000 shares authorized; 132,622,234 shares and 131,246,615 shares issued and outstanding, respectively	1,326	1,312
Additional paid-in capital	1,109,918	1,033,284
Retained earnings	132,404	211,101
Accumulated other comprehensive loss	(17,176)	(20,826)
Total stockholders’ equity	1,226,472	1,224,871
Total liabilities and stockholders’ equity	$ 1,838,411	$ 1,884,488