Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Cash flows from operating activities:
Net income (loss)	$ (453,617)	$ 450,619	$ 1,002,768
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Share-based compensation	193,117	283,507	348,649
Depreciation and amortization	550,761	545,673	576,745
Deferred taxes	(673,785)	176,063	175,437
Excess tax benefit from stock options exercised	(2,815)	(26,347)	(25,716)
Gain on sale of property and equipment	(40,000)
Changes in operating assets and liabilities:
Accounts receivable trade, net	1,612,873	16,712	(688,734)
Inventories	661,483	(103,490)	(345,255)
Prepaid expenses and other current assets	16,318	62,022	8,943
Accounts payable	(960,082)	270,146	260,509
Accrued expenses	(307,957)	(117,700)	(31,481)
Net cash provided by operating activities	596,296	1,557,205	1,281,865
Cash flows from investing activities:
Purchases of property and equipment	(645,835)	(476,683)	(501,501)
Proceeds from sale of property and equipment	40,000
Net cash used by investing activities	(605,835)	(476,683)	(501,501)
Cash flows from financing activities:
Payment of capital lease obligations			(76,372)
Excess tax benefit from stock options exercised	2,815	26,347	25,716
Proceeds from issuance of common stock	11,835	172,670	111,726
Repurchase of common stock	(10,000)	(172,470)	(106,908)
Net cash provided (used) by financing activities	4,650	26,547	(45,838)
Net increase (decrease) in cash and cash equivalents	(4,889)	1,107,069	734,526
Cash and cash equivalents at beginning of year	3,412,649	2,305,580	1,571,054
Cash and cash equivalents at end of year	3,407,760	3,412,649	2,305,580
Supplemental cash flow information:
Income taxes paid, net of refund	436	12,005	34,706
Interest paid			$ 3,554