CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Cash flows from operating activities:
Net income	$ 3,759,353	$ 1,933,119
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	872,358	902,233
Deferred income taxes	(300,350)	45,241
Stock-based compensation expense	227,386	160,090
Gain on sale of property, plant and equipment, net	(300)	(2,700)
Changes in operating assets and liabilities	(9,382,120)	(21,930,235)
Net cash used in operating activities	(4,823,673)	(18,892,252)
Cash flows from investing activities:
Additions to property, plant and equipment	(399,324)	(912,354)
Proceeds from sale of property, plant, and equipment	300	2,700
Purchases of investments	(23,560)	(32,846)
Net cash from investing activities	(422,584)	(942,500)
Cash flows from financing activities:
Proceeds from revolving line of credit and other long-term debt		11,903,489
Repayments of revolving line of credit and other long-term debt	(166,667)	(2,866,667)
Payments of cash dividends	(5,572,859)	(828,509)
Treasury stock purchased	(161,769)	(87,230)
Proceeds from exercise of stock options	12,400	145,695
Net cash provided by (used in) financing activities	(5,888,895)	8,266,778
Change in cash and cash equivalents	(11,135,152)	(11,567,974)
Cash and cash equivalents, beginning of year	17,247,891	11,636,988
Cash and cash equivalents, end of year	$ 6,112,739	$ 69,014