Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 26,918	$ 20,399
Marketable securities	5,230	4,973
Accounts receivable, net	7,536	13,220
Other current assets	4,805	3,729
Total current assets	44,489	42,321
Investments	4,062	5,180
Property and equipment, at cost less accumulated depreciation	11,319	12,006
Other long-term assets	3,956	3,725
Total assets	63,826	63,232
Current liabilities
Accounts payable	1,557	2,011
Deferred revenue, current portion	2,310	1,094
Accrued payroll	2,172	1,888
Accrued expenses	971	525
Other current liabilities	2,530	2,025
Total current liabilities	9,540	7,543
Deferred revenue, net of current portion	265	473
Deferred tax liability		472
Long-term lease obligation	1,121	1,981
Other long-term liabilities	196
Total noncurrent liabilities	1,582	2,926
Stockholders' equity:
Common stock, $0.01 par value: Authorized shares - 20,000,000; Issued shares – 9,016,140 and 9,010,119 at December 31, 2023 and 2022, respectively; Outstanding shares – 8,295,408 and 8,502,735 at December 31, 2023 and 2022, respectively	90	90
Additional paid-in capital	16,621	16,471
Treasury stock, 720,732 and 507,384 shares as of December 31, 2023 and 2022, respectively, at cost	(20,359)	(16,662)
Accumulated other comprehensive loss	32	(61)
Accumulated income	56,320	52,925
Total stockholders’ equity	52,704	52,763
Total liabilities and stockholders’ equity	$ 63,826	$ 63,232