Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Net income	$ 1,345,000	$ 1,390,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	191,000	191,000
Software amortization	380,000	270,000
Stock-based compensation	164,000	229,000
Loss on disposal of assets	5,000	2,000
Changes in operating assets and liabilities:
Accounts receivable, net	(383,000)	(80,000)
Inventories	(444,000)	(285,000)
Prepaid expenses and other current assets	(163,000)	(120,000)
Accounts payable	10,000	448,000
Accrued expenses and other current liabilities	(430,000)	110,000
Net cash provided by operating activities	675,000	2,155,000
Investing activities:
Capitalized software development costs	(134,000)	(833,000)
Purchases of property and equipment	(163,000)	(148,000)
Net cash used for investing activities	(297,000)	(981,000)
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	(13,000)	35,000
Increase in cash and cash equivalents	355,000	1,209,000
Cash and cash equivalents at beginning of period	3,190,000	1,547,000
Cash and cash equivalents at end of period	3,545,000	2,756,000
Non-Cash investing and financing activities:
Purchase of property and equipment in accounts payable	18,000	85,000
Capitalization of software development costs in accounts payable	$ 0	$ 38,000