Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Reconciliation of net income to cash provided (absorbed) by operating activities
Net income (loss)	$ (27,452)	$ 1,912,940
Adjustments to reconcile net income to net cash provided (absorbed) by operating activities:
Depreciation and amortization	537,832	545,569
Stock option compensation expense	17,043	34,054
Gain on disposal of fixed assets	(22,470)	(6,988)
Deferred taxes	(35,000)	200,000
(Increase) decrease in:
Accounts receivable - billed	163,329	(763,606)
Accounts receivable - unbilled	383,739	(3,296,879)
Inventories	(407,716)	732,250
Prepaid taxes and other assets	(109,763)	(43,996)
Increase (decrease) in:
Accounts payable - trade	(411,189)	108,401
Accrued expenses and other	(920,560)	536,434
Accrued income taxes payable	0	359,653
Customer deposits	382,993	(432,101)
Net cash provided (absorbed) by operating activities	(449,214)	(114,269)
Cash flows from investing activities:
Purchases of property and equipment	(339,950)	(1,012,054)
Proceeds from sale of fixed assets	21,614	19,311
Net cash absorbed by investing activities	(318,336)	(992,743)
Cash flows from financing activities:
Proceeds from long-term borrowings	575,000	118,505
Repayments of long-term borrowings and capital leases	(310,519)	(341,310)
Proceeds from options exercised	105,118	0
Net cash provided (absorbed) by financing activities	369,599	(222,805)
Net increase (decrease) in cash and cash equivalents	(397,951)	(1,329,817)
Cash and cash equivalents
Beginning of period	2,573,168	2,929,868
End of period	$ 2,175,217	$ 1,600,051