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STATEMENTS OF CASH FLOWS (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash flows from operating activities:      
Net income $ 11,011,130 $ 7,416,928 $ 529,896
Adjustments to reconcile net income to net cash used in operating activities:      
Depreciation and amortization 623,795 591,373 386,394
Deferred rent 90,419 266,909 (4,832)
Stock-based compensation expense 382,657 985,600 553,629
Common stock issued as employee compensation 37,761 36,157 27,168
Deferred portion of provision for income taxes 11,000 (103,000) (265,000)
Tax benefit for stock options (313,000) (438,000) (304,000)
Bad debts (50,000) 75,000 0
Changes in operating assets and liabilities:      
(Increase) decrease in accounts receivable (3,951,680) 1,791,974 (878,612)
Increase in costs and estimated earnings in excess of billings on uncompleted contracts (29,783,016) (31,942,776) (4,136,426)
Decrease (increase) in prepaid expenses and other current assets 240,263 (8,220) (125,853)
Increase in accounts payable and accrued expenses 1,465,562 4,423,371 2,199,337
Increase (decrease) in income taxes payable (2,383,000) 3,105,994 (1,930,368)
Increase (decrease) in billings in excess of costs and estimated earnings on uncompleted contracts 540,387 97,580 (10,519)
Net cash used in operating activities (22,077,722) (13,701,110) (3,959,186)
Cash flows from investing activities:      
Purchase of property and equipment (825,110) (1,587,898) (300,803)
Net cash used in investing activities (825,110) (1,587,898) (300,803)
Cash flows from financing activities:      
Proceeds from exercise of stock options 1,290,515 455,447 1,101,529
Proceeds from sale of common stock 13,323,694 0 3,529,541
Payment of line of credit (4,000,000) 0 (2,200,000)
Proceeds from line of credit 11,350,000 15,300,000 800,000
Payment of long-term debt (2,042,774) (849,615) (676,530)
Proceeds from long-term debt 4,500,000 0 0
Tax benefit for stock options 313,000 438,000 304,000
Net cash provided by financing activities 24,734,435 15,343,832 2,858,540
Net increase (decrease) in cash 1,831,603 54,824 (1,401,449)
Cash at beginning of year 878,200 823,376 2,224,825
Cash at end of year 2,709,803 878,200 823,376
Supplemental schedule of noncash investing and financing activities:      
Equipment acquired under capital lease 76,592 751,129 113,686
Settlement of other receivables 0 30,000 60,000
Accrued expenses settled in exchange for common stock 228,290 0 99,696
Stock options proceeds paid with Company's stock 0 159,000 288,420
Supplemental schedule of cash flow information:      
Cash paid during the year for interest 783,373 366,491 158,406
Cash paid for income taxes $ 7,886,409 $ 180,000 $ 2,276,367