Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES:
Net income	$ 4,180	$ 1,951
Adjustments to reconcile net income from continuing operations to net cash used for operating activities:
Depreciation and amortization	428	253
Stock-based compensation expense	80	26
Non-cash investment expense		255
Non-cash interest income	(18)	(32)
Equity in loss of affiliate company		25
Changes in operating assets and liabilities:
Accounts receivable	(392)	(2,244)
Other current assets	432	(2,607)
Other long-term assets	29	(92)
Accounts payable	162	(49)
Accrued payroll	27	352
Deferred revenue, current portion	33	72
Accrued expenses	34	(19)
Other current liabilities	1,010	123
Deferred revenue, net of current portion	(51)	31
Net cash provided by (used for) operating activities	5,954	(1,955)
INVESTING ACTIVITIES:
Purchases of property and equipment	(1,521)	(515)
Advances of notes receivable	(1,500)	(960)
Purchase of long-term investment
Net cash used for investing activities	(3,021)	(1,475)
FINANCING ACTIVITIES:
Sale of capital stock pursuant to exercise of option	59	34
Net cash provided by financing activities	59	34
Effects of exchange rate changes on cash	(36)	15
Net increase (decrease) in cash	2,956	(3,381)
Cash at beginning of period	18,919	14,024
Cash at end of period	21,875	10,643
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for income taxes	$ 250