Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 201,933	$ 600,941
Investments	62,396	0
Accounts receivable, net	102,006	70,063
Income tax receivable		1,275
Other current assets	14,020	8,766
Total current assets	380,355	681,045
Property and equipment, net	136,677	136,120
Right-of-use assets	55,672	57,652
Amortizable intangible assets, net	183,114	185,219
Goodwill	160,766	160,766
Other assets	1,802	1,943
Total assets	918,386	1,222,745
Current liabilities
Accounts payable	29,638	24,306
Accrued compensation and benefits	31,986	32,714
Accrued liabilities	30,705	27,593
Income taxes payable	20,694	5,895
Deferred revenue	12,172	10
Current portion of notes payable	7,514	7,426
Total current liabilities	132,709	97,944
Deferred income taxes, noncurrent	27,344	25,962
Other long-term liability	30	37
Notes payable, less current portion	51,866	53,755
Total liabilities	211,949	177,698
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 10,000 shares authorized; 0 shares issued and outstanding at March 31, 2022 and December 31, 2021
Common stock, $0.01 par value, 100,000 shares authorized; 53,826 and 53,637 shares issued and 33,278 and 37,722 shares outstanding at March 31, 2022 and December 31, 2021, respectively	538	536
Treasury stock, at cost, 20,548 and 15,915 shares of common stock at March 31, 2022 and December 31, 2021, respectively	(1,506,766)	(1,107,211)
Additional paid-in capital	299,858	296,670
Accumulated other comprehensive loss	(323)
Retained earnings	1,913,130	1,855,052
Total stockholders' equity	706,437	1,045,047
Total liabilities and stockholders' equity	$ 918,386	$ 1,222,745