Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flow from operating activities:
Net income	$ 461,536	$ 533,428
Depreciation and amortization	18,773	14,564
Deferred tax benefit	(45,548)	(87,000)
Share-based compensation expense	2,724	7,962
Net changes in assets and liabilities
(Increase) decrease in receivables on government contracts	1,144,942	(1,156,514)
(Increase) decrease in prepaid expenses and other current assets	45,992	(36,139)
Increase in accrued payroll and payroll taxes	80,711	327,765
Increase (decrease) in accounts payable and accrued expenses	(310,606)	557,462
Increase in accrued warranty expense	326,154	$ (1,690)
Increase (decrease) in deferred revenue	24,000
Decrease in long-term liabilities	(16,334)	$ (4,706)
Net cash provided by operating activities	1,732,344	155,132
Cash flow from investing activities:
Purchase of property and equipment	(35,673)	(21,993)
Net cash used in investing activities	(35,673)	(21,993)
Cash flow from financing activities:
Proceeds from exercise of stock options	350	349
Net cash provided by financing activities	350	349
Net increase in cash and cash equivalents	1,697,021	133,488
Cash and cash equivalents, beginning of year	1,161,634	1,028,146
Cash and cash equivalents, end of year	2,858,655	1,161,634
Supplemental non-cash operating activity:
Cash paid during the year for income taxes	397,900	$ 9,458
Supplemental non-cash investing activity:
Estimated consideration to be paid in connection with purchase of intangible asset	$ 126,000