Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Cash flows from operating activities:
Net income	$ 12,875,269	$ 6,902,531	$ 6,425,876
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	3,284,313	3,441,281	3,412,891
Amortization and of debt issuance costs	304,920	304,920	282,129
Provision for losses on doubtful receivables	826	6,880	62,618
Deferred income taxes	332,956	1,530,367	1,059,169
Stock-based compensation expense	778,223	488,277	402,363
Gain on sale of discontinued operations		(127,994)
(Gain) loss on sale of property, plant and equipment, net	(73,295)	153,236	(289,632)
Changes in operating assets and liabilities
Accounts receivable	(7,109,323)	3,718,386	(2,904,202)
Inventories	(2,330,929)	5,727,237	(187,324)
Other current assets	1,740,455	(2,984,124)	(131,485)
Trade accounts payable	(1,007,407)	(6,930,928)	3,952,411
Other current liabilities	970,908	(2,688,508)	1,377,903
Net cash from operating activities	9,766,916	9,541,561	13,462,717
Cash flows from investing activities:
Proceeds from sale of discontinued operations		3,884,656
Proceeds from sale of property, plant, and equipment	862,435	830,451	1,268,167
Additions to property, plant and equipment	(3,891,082)	(4,730,958)	(6,237,152)
Proceeds from sale of investments	1,029,000	3,175,591	0
Purchases of investments	(116,479)	(4,289,298)	(27,338)
Decrease in other assets			25,736
Net cash from investing activities	(2,116,126)	(1,129,558)	(4,970,587)
Cash flows from financing activities:
Proceeds from revolving line of credit and other long-term debt	38,570,153		63,374,736
Repayments of revolving line of credit and other long-term debt	(39,236,818)	(666,668)	(67,814,067)
Payments of cash dividends	(1,829,028)	(413,326)
Debt issuance costs			(358,975)
Treasury stock purchased	(157,308)
Proceeds from exercise of stock options	550,084	410,702	141,397
Excess tax benefits from exercise of stock options	63,030
Net cash from financing activities	(2,039,887)	(669,292)	(4,656,909)
Change in cash and cash equivalents	5,610,903	7,742,711	3,835,221
Cash and cash equivalents, beginning of year	11,636,988	3,894,277	59,056
Cash and cash equivalents, end of year	17,247,891	11,636,988	3,894,277
Cash paid (received) during the year for:
Income taxes, net	5,112,973	1,652,889	2,072,401
Interest, net	(210,076)	247,178	$ 305,895
Noncash financing activities:
Common stock dividends declared and payable	$ 5,019,785	$ 413,480