Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES:
Net income (loss)	$ 893	$ (508)
Adjustments to reconcile net loss from continuing operations to net cash used for operating activities:
Depreciation and amortization	131	101
Stock-based compensation expense	13	13
Non-cash investment expense	5	3
Non-cash interest income	(21)
Equity in loss of affiliate company	19	10
Changes in operating assets and liabilities:
Accounts receivable	(1,716)	571
Other current assets	(2,673)	(161)
Interest receivable	16
Other long-term assets	(34)	20
Accounts payable	(192)	(195)
Accrued payroll	334	63
Deferred revenue, current portion	(5)	(83)
Accrued expenses	7	31
Other current liabilities	(7)	(12)
Deferred revenue, net of current portion	43	(16)
Net cash used for operating activities	(3,187)	(163)
INVESTING ACTIVITIES:
Purchases of property and equipment	(170)	(48)
Advances of notes receivable	(485)
Purchase of long-term investment		(1,000)
Net cash used for investing activities	(655)	(1,048)
Effects of exchange rate changes on cash	1	(8)
Net decrease in cash	(3,841)	(1,219)
Cash at beginning of period	14,024	17,724
Cash at end of period	$ 10,183	$ 16,505