Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES:
Net income	$ 2,072	$ 893
Adjustments to reconcile net income from continuing operations to net cash used for operating activities:
Depreciation and amortization	180	131
Stock-based compensation expense	25	13
Non-cash investment expense		5
Non-cash interest income	(30)	(21)
Equity in loss of affiliate company		19
Changes in operating assets and liabilities:
Accounts receivable	42	(1,716)
Other current assets	110	(2,657)
Other long-term assets	(37)	(34)
Accounts payable		(192)
Accrued payroll	140	334
Deferred revenue, current portion	124	(5)
Accrued expenses	56	7
Other current liabilities	1,061	(7)
Deferred revenue, net of current portion	(37)	43
Net cash used for operating activities	3,706	(3,187)
INVESTING ACTIVITIES:
Purchases of property and equipment	(112)	(170)
Advances of notes receivable	(500)	(485)
Net cash used for investing activities	(612)	(655)
FINANCING ACTIVITIES:
Sale of capital stock pursuant to exercise of option	59
Net cash provided by financing activities	59
Effects of exchange rate changes on cash	(1)	1
Net increase (decrease) in cash	3,152	(3,841)
Cash at beginning of period	18,919	14,024
Cash at end of period	$ 22,071	$ 10,183