CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,428,000	$ 901,000
Short-term investments	2,398,000	1,850,000
Accounts receivable, net of allowance for doubtful accounts of $97 and $82	412,000	555,000
Other current assets	1,764,000	1,064,000
Total current assets	7,190,000	4,706,000
Long-term investments	833,000	1,275,000
Property and equipment, net	1,358,000	1,460,000
Goodwill	4,675,000	4,533,000
Intangible assets, net	12,000	39,000
Operating lease right-of-use assets	509,000	583,000
Deferred tax assets	3,537,000	3,980,000
Warrant asset	1,051,000	281,000
Other assets	145,000	133,000
Total assets	19,310,000	18,174,000
Current liabilities:
Short-term debt	18,000	1,020,000
Accounts payable	332,000	229,000
Accrued expenses and other current liabilities	2,910,000	2,097,000
Deferred revenue	110,000	129,000
Income taxes payable	180,000	169,000
Total current liabilities	4,002,000	4,066,000
Operating lease liabilities	380,000	461,000
Deferred tax liabilities	2,359,000	2,355,000
Long-term debt	7,745,000	6,738,000
Other liabilities	1,263,000	1,353,000
Total liabilities	15,749,000	15,304,000
Commitments and contingencies (Note 13)
Stockholders' equity:
Common stock, $0.001 par value; 3,580 shares authorized; 684 and 796 shares outstanding	2,000	2,000
Additional paid-in capital	16,497,000	16,126,000
Treasury stock at cost, 1,021 and 897 shares	(36,515,000)	(31,396,000)
Retained earnings	22,961,000	17,754,000
Accumulated other comprehensive income	616,000	384,000
Total stockholders’ equity	3,561,000	2,870,000
Total liabilities and stockholders’ equity	19,310,000	18,174,000
Held-for-sale
Current assets:
Current assets	1,188,000	195,000
Long-term assets	0	878,000
Current liabilities:
Current liabilities	452,000	163,000
Long-term liabilities	0	305,000
Discontinued Operations
Current assets:
Current assets	0	141,000
Long-term assets	0	306,000
Current liabilities:
Current liabilities	0	259,000
Long-term liabilities	$ 0	$ 26,000