Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
OPERATING ACTIVITIES:
Net income	$ 6,042	$ 7,272
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,460	730
Stock-based compensation expense	330	129
Non-cash investment expense	1,009
Non-cash interest income	(93)	(23)
Equity in loss of affiliate company	268	104
Changes in operating assets and liabilities:
Accounts receivable	4,714	(2,328)
Other current assets	(312)	163
Other long-term assets	185	(65)
Accounts payable	62	8
Accrued payroll	(487)	904
Deferred revenue, current portion	2,786	(339)
Accrued expenses	(46)	27
Other current liabilities	(993)	1,167
Deferred revenue, net of current portion	259	(70)
Net cash provided by operating activities	15,184	7,679
INVESTING ACTIVITIES:
Purchases of property and equipment	(6,173)	(1,553)
Advances of notes receivable	(1,000)	(1,500)
Net cash used for investing activities	(7,173)	(3,053)
FINANCING ACTIVITIES:
Sale of capital stock pursuant to exercise of option		163
Net cash provided by financing activities		163
Effects of exchange rate changes on cash	(35)	(32)
Net increase in cash	7,976	4,757
Cash at beginning of period	26,415	18,919
Cash at end of period	34,391	23,676
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for income taxes	$ 1,826	$ 875