Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 194,616	$ 259,386
Short-term investments	237,983	271,396
Accounts receivable, net	248,872	242,955
Inventories, net	200,410	194,146
Prepaid expenses and other current assets	65,477	54,337
Total current assets	947,358	1,022,220
Property and equipment, net	243,717	245,201
Goodwill	262,242	264,530
Intangible assets, net	84,083	110,783
Operating lease right-of-use assets	70,407
Other long-term assets	44,082	28,501
Total assets	1,651,889	1,671,235
Current liabilities:
Accounts payable and accrued expenses	52,192	48,388
Accrued compensation	47,732	45,821
Deferred revenue - current	131,445	127,288
Operating lease liabilities, current	13,431
Other taxes payable	40,607	35,574
Other current liabilities	20,716	25,913
Total current liabilities	306,123	282,984
Deferred income taxes	14,065	25,457
Income tax payable - non-current	69,151	74,546
Liability for uncertain tax positions	6,652	9,775
Deferred revenue - non-current	33,480	32,636
Operating lease liabilities, non-current	40,650
Other long-term liabilities	5,418	7,479
Total liabilities	475,539	432,877
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; 130,504,535 and 132,655,941 shares issued and outstanding, respectively	1,305	1,327
Additional paid-in capital	953,578	897,544
Retained earnings	242,537	356,418
Accumulated other comprehensive loss	(21,070)	(16,931)
Total stockholders’ equity	1,176,350	1,238,358
Total liabilities and stockholders’ equity	$ 1,651,889	$ 1,671,235