Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income	$ 494,000	$ 520,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	126,000	127,000
Software amortization	231,000	180,000
Stock-based compensation	123,000	153,000
Loss on disposal of assets	1,000	0
Changes in operating assets and liabilities:
Accounts receivable, net	365,000	709,000
Inventories	(313,000)	(132,000)
Prepaid expenses and other current assets	(136,000)	(69,000)
Accounts payable	206,000	237,000
Accrued expenses and other current liabilities	(396,000)	(102,000)
Net cash provided by operating activities	701,000	1,623,000
Investing activities:
Capitalized software development costs	(102,000)	(441,000)
Purchases of property and equipment	(79,000)	(101,000)
Net cash used for investing activities	(181,000)	(542,000)
Financing activities:
Stock for tax withholding	(10,000)	0
Net cash used for financing activities	(10,000)	0
Effect of exchange rate changes on cash	(10,000)	28,000
Increase in cash and cash equivalents	500,000	1,109,000
Cash and cash equivalents at beginning of period	3,190,000	1,547,000
Cash and cash equivalents at end of period	3,690,000	2,656,000
Non-Cash investing and financing activities:
Purchase of property and equipment in accounts payable	2,000	16,000
Capitalization of software development costs in accounts payable	$ 0	$ 125,000