Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 139,401	$ 600,941
Investments	63,867	0
Accounts receivable, net	25,727	70,063
Income tax receivable	8,967	1,275
Other current assets	11,890	8,766
Total current assets	249,852	681,045
Property and equipment, net	139,632	136,120
Right-of-use assets	54,202	57,652
Amortizable intangible assets, net	181,009	185,219
Goodwill	160,766	160,766
Other assets	1,842	1,943
Total assets	787,303	1,222,745
Current liabilities
Accounts payable	18,139	24,306
Accrued compensation and benefits	32,911	32,714
Accrued liabilities	32,977	27,593
Income taxes payable	32	5,895
Deferred revenue	11,958	10
Current portion of notes payable	7,699	7,426
Total current liabilities	103,716	97,944
Deferred income taxes, noncurrent	26,571	25,962
Other long-term liability	24	37
Notes payable, less current portion	50,354	53,755
Total liabilities	180,665	177,698
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 10,000 shares authorized; 0 shares issued and outstanding at June 30, 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 June 30, 2022 and December 31, 2021, respectively	538	536
Treasury stock, at cost, 20,548 and 15,915 shares of common stock at June 30, 2022 and December 31, 2021, respectively	(1,635,223)	(1,107,211)
Additional paid-in capital	303,029	296,670
Accumulated other comprehensive loss	(398)
Retained earnings	1,938,692	1,855,052
Total stockholders' equity	606,638	1,045,047
Total liabilities and stockholders' equity	$ 787,303	$ 1,222,745