Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income/(loss)	$ 668,222us-gaap_NetIncomeLoss	$ (268,147)us-gaap_NetIncomeLoss
Adjustments to reconcile net income/(loss) to net cash (used in)/provided by operating activities
Stock-based compensation	195,221us-gaap_ShareBasedCompensation	137,999us-gaap_ShareBasedCompensation
Depreciation and amortization	222,562us-gaap_DepreciationAndAmortization	196,837us-gaap_DepreciationAndAmortization
Deferred tax expense	204,659us-gaap_DeferredIncomeTaxExpenseBenefit	219,380us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for doubtful accounts	30,723us-gaap_ProvisionForDoubtfulAccounts	(97,496)us-gaap_ProvisionForDoubtfulAccounts
Changes in operating assets and liabilities
Accounts receivable	(1,694,231)	1,022,478
Cost and estimated earnings in excess of billings on contracts in progress	(952,480)	(356,416)
Inventories	139,590us-gaap_IncreaseDecreaseInInventories	(458,141)us-gaap_IncreaseDecreaseInInventories
Other current assets	123,024	97,320
Accounts payable and accrued expenses	471,283	357,635
Billings in excess of costs and estimated earnings on contracts in progress	1,174,448	144,274
Accrued loss on litigation settlement	(4,925,000)
Deferred revenue	(333,239)	(204,527)
Net cash (used in)/provided by operating activities:	(4,164,060)	791,196
Cash flows from investing activities:
Release of restricted cash		200,000
Capital expenditures	(122,363)	(141,325)
Net cash (used in)/provided by investing activities:	(122,363)	58,675
Cash flows from financing activities:
Proceeds from stock options exercised		51,100
Payments of long-term debt	(180,000)us-gaap_RepaymentsOfLongTermDebt	(180,000)us-gaap_RepaymentsOfLongTermDebt
Net cash used in financing activities:	(180,000)	(128,900)
Net (decrease)/increase in cash and cash equivalents	(4,466,423)	720,971
Cash and cash equivalents at beginning of period	11,966,863	11,247,560
Cash and cash equivalents at end of period	7,500,440	11,968,531
Supplemental disclosure of cash flow information:
Income taxes paid	100,000us-gaap_IncomeTaxesPaid	1,622us-gaap_IncomeTaxesPaid
Interest paid	$ 24,725us-gaap_InterestPaid	$ 29,015us-gaap_InterestPaid

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