Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 497,176	$ (2,895,861)
Loss from discontinued operations	1,779	20,546
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
(Gain) loss on sale of property, plant and equipment	(24,500)	0
Depreciation and amortization	750,616	688,089
Non-cash interest expense	13,842	0
Change in allowance for doubtful accounts	10,000	(77,098)
Deferred income taxes	0	2,267,969
Share-based compensation expense	26,548	27,746
Changes in operating assets and liabilities:
Accounts receivable	(83,113)	(39,618)
Inventories	(752,266)	(36,105)
Prepaid expenses and other current assets	(107,017)	132,438
Other non-current assets	66,128	(94,558)
Accounts payable	(397,948)	(211,992)
Accrued expenses and other current liabilities	879,531	242,612
Other non-current liabilities	(51,060)	(38,195)
Net cash provided by (used in) operating activities of continuing operations	829,716	(14,027)
Net cash provided by (used in) operating activites of discontinued operations	(1,509)	(310,301)
Net cash provided by (used in) investing activities	828,207	(324,328)
Cash flows from investing activities:
Purchases of property, plant and equipment	(834,971)	(703,737)
Proceeds from sale of property, plant and equipment	24,500	0
Cash paid for patents and trademarks	(2,613)	(31,385)
Net cash provided by (used in) investing activities from continuing operations	(813,084)	(735,122)
Net cash provided by (used in) investing activities from discontinued operations	0	320,518
Net cash provided by (used in) investing activities	(813,084)	(414,604)
Cash flows from financing activities:
(Payments on) proceeds from revolving line of credit, net	(478,000)	2,174,493
Payments on demand line of credit	0	(800,000)
Proceeds from equipment line of credit	116,905	0
Proceeds from term notes payable	0	1,500,000
Payments on term notes payable	(198,854)	(1,273,742)
Proceeds from stock options exercises	25,575	0
Restricted cash	0	(1,000,000)
Net cash provided by (used in) financing activities from continuing operations	(534,374)	600,751
Net cash provided by (used in) financing activities from discontinued operations	0	(55,002)
Net cash provided by (used in) financing activities	(534,374)	545,749
Net decrease in cash and cash equivalents	(519,251)	(193,183)
Cash and cash equivalents, beginning of period	751,275	508,590
Cash and cash equivalents, end of period	232,024	315,407
Less: cash and cash equivalents of discontinued operations at end of period	0	2,495
Cash and cash equivalents of continuing operations at end of period	232,024	312,912
Supplemental Cash Flow Information (unaudited)
Cash paid for interest	119,229	40,593
Non-cash activities:
Acquisition of equipment with equipment notes	0	272,500
Equipment line of credit converted to term notes payable	740,999	0
Reduction of restricted cash offset by performance guarantee	$ 975,430	$ 0