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CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities:    
Net income $ 3,455,551 $ 4,615,338
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 338,733 300,320
Deferred rent 27,311 45,532
Stock compensation 360,964 382,657
Deferred income taxes (10,000) (57,000)
Tax benefit from stock option plans 26,000 0
Changes in operating assets and liabilities:    
Increase in accounts receivable (2,931,047) (4,433,538)
Increase in costs and estimated earnings in excess of billings on uncompleted contracts (2,393,630) (9,707,304)
Decrease in prepaid expenses and other assets 141,907 642
Increase (decrease) in accounts payable and accrued expenses (6,349,868) (3,327,485)
Decrease in billings in excess of costs and estimated earnings on uncompleted contracts (236,292) 0
Increase (decrease) in income taxes payable 222,530 851,070
Net cash used in operating activities (7,631,655) (11,329,768)
Cash used in investing activities - purchase of plant and equipment (548,179) (673,472)
Cash flows from financing activities:    
Payment of long-term debt (556,592) (603,008)
Proceeds from long-term debt 0 4,500,000
Proceeds from line of credit 7,500,000 1,500,000
Payment of line of credit (1,000,000) (3,000,000)
Proceeds from exercise of stock options 0 1,224,515
Proceeds from sale of common stock 0 11,107,580
Tax benefit from stock options (26,000) 0
Net cash provided by financing activities 5,917,408 14,729,087
Net increase (decrease) in cash (2,262,426) 2,725,847
Cash at beginning of period 2,709,803 878,200
Cash at end of period 447,377 3,604,047
Non cash investing and financing activities:    
Equipment acquired under capital lease 0 76,592
Common stock issued for bonuses 152,074 228,290
Cash paid during the period for:    
Interest 412,954 606,352
Income taxes $ 1,250,000 $ 1,400,000