Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 31,005	$ 20,399
Marketable securities	5,099	4,973
Accounts receivable, net	6,110	13,220
Other current assets	3,884	3,729
Total current assets	46,098	42,321
Investments	4,494	5,180
Property and equipment, at cost less accumulated depreciation	12,315	12,006
Other long-term assets	3,055	3,725
Total assets	65,962	63,232
Current liabilities:
Accounts payable	1,407	2,011
Deferred revenue, current portion	1,724	1,094
Accrued payroll	2,003	1,888
Accrued expenses	877	525
Other current liabilities	1,959	2,025
Total current liabilities	7,970	7,543
Noncurrent liabilities:
Deferred revenue, net of current portion	363	473
Deferred tax liability	494	472
Long-term lease obligation	1,556	1,981
Total noncurrent liabilities	2,413	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 June 30, 2023 and December 31, 2022, respectively; Outstanding shares – 8,490,681 and 8,502,735 at June 30, 2023 and December 31, 2022, respectively	90	90
Additional paid-in capital	16,621	16,471
Treasury stock, 525,459 and 507,384 shares at June 30, 2023 and December 31, 2022, respectively, at cost	(17,105)	(16,662)
Accumulated other comprehensive income (loss)	(83)	(61)
Accumulated earnings	56,056	52,925
Total stockholders’ equity	55,579	52,763
Total liabilities and stockholders’ equity	$ 65,962	$ 63,232