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Consolidated Statements of Cash Flows (Unaudited) (USD $)
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Cash flows from operating activities:    
Net (loss)/income $ (66,173) $ 433,680
Stock-based compensation expense 253,739 120,571
Gain on sale of building   (887,477)
Depreciation and amortization 394,720 302,000
Deferred tax expense/(benefit) 158,193 (331,548)
Bad debt provision (89,523) (13,431)
Accounts receivable (1,013,228) 727,364
Costs and estimated earnings in excess of billings on uncompleted contracts (1,016,145) (1,564,252)
Inventories, net (803,916) (293,825)
Other current assets 76,542 40,437
Billings in excess of costs and estimated earnings on uncompleted contracts (190,821) (430,359)
Accounts payable and accrued expenses 929,111 (192,298)
Deferred revenue (62,927) 43,150
Net cash used in operating activities (1,430,428) (2,045,988)
Cash flows from investing activities:    
Release of restricted cash 200,000  
Capital expenditures (306,974) (1,475,181)
Proceeds from sale of Smithtown Ave. facility   3,619,899
Deposits   500
Net cash (used in)/provided by investing activities (106,974) 2,145,218
Cash flows from financing activities:    
Net proceeds from stock options exercised 51,100 17,700
Payments of long-term debt (360,000) (2,677,334)
Net cash (used in) financing activities (308,900) (2,659,634)
Net decrease in cash and cash equivalents (1,846,302) (2,560,404)
Cash and cash equivalents at beginning of period 11,247,560 13,721,324
Cash and cash equivalents at end of period 9,401,258 11,160,920
Income taxes paid   25
Interest paid $ 56,891 $ 99,663