CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Cash flows from operating activities:
Net income (loss)	$ 2,912,026	$ 3,228,937
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation and amortization	1,917,847	1,761,455
Provision for losses on doubtful receivables	2,944	77,505
Deferred income taxes	(351,405)	755,749
Stock-based compensation expense	225,642	192,017
Gain on sale of discontinued operations	(127,994)
(Gain) loss on sale of property, plant and equipment, net	48,920	(346,393)
Changes in operating assets and liabilities	1,525,543	(1,193,616)
Net cash used in operating activities	6,153,523	4,475,654
Cash flows from investing activities:
Proceeds from sale of discontinued operations	3,884,656
Additions to property, plant and equipment	(1,442,337)	(3,660,390)
Proceeds from sale of property, plant, and equipment	54,863	1,245,459
Proceeds from sale of investments	2,887,193	34,769
Purchases of investments	(2,901,248)
Net cash provided by (used in) investing activities	2,483,127	(2,380,162)
Cash flows from financing activities:
Proceeds from revolving line of credit and other long-term debt		46,442,128
Repayments of revolving line of credit and other long-term debt	(333,334)	(48,354,219)
Payment of debt issuance costs		(353,383)
Proceeds from exercise of stock options	351,725	136,148
Net cash provided by (used in) financing activities	18,391	(2,129,326)
Change in cash and cash equivalents	8,655,041	(33,834)
Cash and cash equivalents, beginning of period	3,894,277	59,056
Cash and cash equivalents, end of period	$ 12,549,318	$ 25,222