Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash	$ 37,956	$ 26,415
Accounts receivable, net	3,270	8,759
Other current assets	1,263	905
Total current assets	42,489	36,079
Investments	1,921	3,081
Notes and interest receivable	2,681	1,795
Property and equipment, net	6,914	2,177
Other long-term assets	3,020	1,108
Total assets	57,025	44,240
Current liabilities:
Accounts payable	714	403
Deferred revenue, current portion	1,322	689
Accrued payroll	1,901	2,503
Accrued expenses	321	153
Income tax payable	954	1,100
Other current liabilities	4,850	1,345
Total current liabilities	10,062	6,193
Deferred revenue, net of current portion		23
Deferred tax liability	818	275
Long-term lease obligation	1,994	460
Total noncurrent liabilities	2,812	758
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock, $0.01 par value: Authorized shares - 20,000,000; Issued shares - 8,929,368 and 8,924,988 at December 31, 2020 and 2019, respectively; Outstanding shares - 8,885,797 and 8,924,988 at December 31, 2020 and 2019, respectively	89	89
Additional paid-in capital	15,836	15,450
Treasury stock, 43,571 and 0 shares as of December 31, 2020 and 2019, respectively, at cost	(1,639)
Accumulated other comprehensive loss	(140)	(94)
Accumulated income	30,005	21,844
Total stockholders’ equity	44,151	37,289
Total liabilities and stockholders’ equity	$ 57,025	$ 44,240