Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 21,692	$ 20,399
Marketable securities	5,054	4,973
Accounts receivable, net	14,012	13,220
Other current assets	3,449	3,729
Total current assets	44,207	42,321
Investments	4,885	5,180
Property and equipment, at cost less accumulated depreciation	12,056	12,006
Other long-term assets	3,422	3,725
Total assets	64,570	63,232
Current liabilities:
Accounts payable	1,592	2,011
Deferred revenue, current portion	1,745	1,094
Accrued payroll	1,523	1,888
Accrued expenses	826	525
Other current liabilities	2,282	2,025
Total current liabilities	7,968	7,543
Noncurrent liabilities:
Deferred revenue, net of current portion	414	473
Deferred tax liability	445	472
Long-term lease obligation	1,740	1,981
Total noncurrent liabilities	2,599	2,926
Common stock, $0.01 par value: Authorized shares - 20,000,000;
Stockholders’ equity:
Outstanding shares – 8,502,735 at March 31, 2023 and December 31, 2022, respectively	90	90
Additional paid-in capital	16,471	16,471
Treasury stock, 507,384 shares at March 31, 2023 and December 31, 2022, respectively, at cost	(16,662)	(16,662)
Accumulated other comprehensive loss	(77)	(61)
Accumulated income	54,181	52,925
Total stockholders’ equity	54,003	52,763
Total liabilities and stockholders’ equity	$ 64,570	$ 63,232