Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 122,272	$ 120,346
Restricted cash and cash equivalents	300	61,667
Investments	21,601	69,002
Accounts receivable, net	48,939	46,830
Interest receivable on Secured Note	5,011	4,650
Income tax receivable	2,186	8
Other current assets	8,035	6,963
Total current assets	208,344	309,466
Property and equipment, net	119,734	111,039
Right-of-use assets	27,770
Secured Note receivable	969,912	900,093
Amortizable intangible assets, net	202,057
Goodwill	160,766	2,941
Other assets	1,706	478
Total assets	1,690,289	1,324,017
Current liabilities
Accounts payable	14,835	14,274
Accrued compensation and benefits	20,800	15,427
Accrued liabilities	16,771	8,907
Income taxes payable	6,576	5,442
Deferred revenue	20
Current portion of lease liability	3,084
Current portion of notes payable	33,144	36,468
Total current liabilities	95,230	80,518
Deferred income taxes, noncurrent	18,320	6,465
Other long-term liability	13
Lease liability, less current portion	25,519
Notes payable, less current portion	107,774	23,437
Total liabilities	246,856	110,420
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 10,000 shares authorized; 0 shares issued and outstanding at December 31, 2019 and December 31, 2018
Common stock, $0.01 par value, 100,000 shares authorized; 53,054 and 52,690 shares issued and 48,105 and 48,201 shares outstanding at December 31, 2019 and December 31, 2018, respectively	531	527
Treasury stock, at cost, 4,949 and 4,489 shares of common stock at December 31, 2019 and December 31, 2018, respectively	(169,365)	(125,452)
Additional paid-in capital	270,923	256,806
Accumulated other comprehensive loss		(453)
Retained earnings	1,341,344	1,082,169
Total stockholders' equity	1,443,433	1,213,597
Total liabilities and stockholders' equity	$ 1,690,289	$ 1,324,017