Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES:
Net income	$ 10,969	$ 6,244
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,012	614
Stock-based compensation expense	191	62
Gain on sale of investment	(34)
Provision (benefit) for deferred income taxes	555	(280)
Non-cash investment expense		363
Non-cash interest income	(49)	(59)
Equity in loss of affiliate company	332	25
Changes in operating assets and liabilities:
Accounts receivable, net	(5,028)	(2,523)
Other current assets	224	1,171
Other long-term assets	61	(18)
Accounts payable	131	(49)
Accrued payroll	1,358	550
Deferred revenue, current portion	(92)	(72)
Accrued expenses	82	(27)
Other current liabilities	961	595
Deferred revenue, net of current portion	(88)	60
Other long-term liabilities
Net cash provided by operating activities	10,585	6,656
INVESTING ACTIVITIES:
Purchases of property and equipment	(1,676)	(865)
Advances on note and interest receivable	(2,000)	(1,035)
Proceeds from sale of investments	379
Net cash used for investing activities	(3,297)	(1,900)
FINANCING ACTIVITIES:
Sale of capital stock pursuant to exercise of option	210	111
Net cash provided by financing activities	210	111
Effects of exchange rate changes on cash	(2)	28
Net increase in cash	7,496	4,895
Cash at beginning of year	18,919	14,024
Cash at end of year	26,415	18,919
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ 1,159