Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 471,205	$ 194,616
Short-term investments	137,104	237,983
Accounts receivable, net	211,766	248,872
Inventories, net	209,928	200,410
Prepaid expenses and other current assets	65,817	65,477
Total current assets	1,095,820	947,358
Property and equipment, net	247,548	243,717
Goodwill	255,153	262,242
Intangible assets, net	68,975	84,083
Operating lease right-of-use assets	63,895	70,407
Restricted cash	70,000	0
Other long-term assets	48,424	44,082
Total assets	1,849,815	1,651,889
Current liabilities:
Accounts payable and accrued expenses	53,247	52,192
Accrued compensation	44,431	47,732
Deferred revenue - current	113,785	131,445
Operating lease liabilities - current	13,583	13,431
Other taxes payable	39,477	40,607
Debt, current	3,500	0
Other current liabilities	66,818	20,716
Total current liabilities	334,841	306,123
Deferred income taxes	16,258	14,065
Income tax payable - non-current	61,628	69,151
Liability for uncertain tax positions	6,808	6,652
Deferred revenue - non-current	32,468	33,480
Operating lease liabilities - non-current	34,655	40,650
Debt, non-current	85,020	0
Other long-term liabilities	8,498	5,418
Total liabilities	580,176	475,539
Commitments and contingencies
Stockholders' equity:
Preferred stock:  par value $0.01;  5,000,000 shares authorized; none issued and outstanding	0	0
Common Stock, Value, Issued	1,314	1,305
Additional paid-in capital	993,058	953,578
Retained earnings	299,132	242,537
Accumulated other comprehensive loss	(23,865)	(21,070)
Total stockholders’ equity	1,269,639	1,176,350
Total liabilities and stockholders’ equity	$ 1,849,815	$ 1,651,889