Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 142,925	$ 120,409
Investments	90,444	61,295
Accounts receivable, net	24,682	77,413
Income tax receivable	9,037	2,788
Other current assets	12,461	11,368
Total current assets	279,549	273,273
Property and equipment, net	154,709	147,504
Right-of-use assets	76,446	72,719
Amortizable intangible assets, net	172,590	176,800
Goodwill	160,766	160,766
Other assets	2,157	1,687
Total assets	846,217	832,749
Current liabilities
Accounts payable	22,842	20,006
Accrued compensation and benefits	28,594	36,412
Accrued liabilities	30,485	22,473
Income taxes payable	75	12,167
Deferred revenue	9,110
Current portion of lease liability	9,339	8,648
Total current liabilities	100,445	99,706
Deferred income taxes, noncurrent	27,308	26,195
Other long-term liability	423	436
Lease liability, less current portion	72,616	68,793
Total liabilities	200,792	195,130
Commitments and contingencies
Stockholders' equity
Common stock, $0.01 par value, 100,000 shares authorized; 53,970 and 53,830 shares issued and 30,398 and 31,058 shares outstanding at June 30, 2023 and December 31, 2022, respectively	540	538
Treasury stock, at cost, 23,572 and 22,772 shares of common stock at June 30, 2023 and December 31, 2022, respectively	(1,798,619)	(1,711,423)
Additional paid-in capital	315,930	309,310
Accumulated other comprehensive loss	(690)	(533)
Retained earnings	2,128,264	2,039,727
Total stockholders' equity	645,425	637,619
Total liabilities and stockholders' equity	$ 846,217	$ 832,749