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CONSOLIDATED BALANCE SHEETS (USD $)
Dec. 31, 2011
Dec. 31, 2010
CURRENT ASSETS    
Cash and cash equivalents $ 15,745,559 $ 13,072,503
Trade accounts receivable 19,351,023 17,166,709
Cost and estimated earnings in excess of billings on uncompleted contracts 5,101,478 4,578,580
Prepaid expenses and other 1,606,936 1,600,450
Prepaid federal and state income tax   1,219,165
Total current assets 41,804,996 37,637,407
PROPERTY AND EQUIPMENT - at cost    
Machinery and equipment 139,017,290 115,252,066
Automobiles and trucks 12,616,608 10,868,295
Furniture and fixtures 434,146 418,643
Leasehold improvements 14,994 14,994
Total property and equipment, gross 152,083,038 126,553,998
Less accumulated depreciation and amortization (94,286,207) (76,838,372)
Total property and equipment, net 57,796,831 49,715,626
Goodwill 201,530 201,530
Other assets 77,870 60,834
Total noncurrent assets 279,400 262,364
Total assets 99,881,227 87,615,397
CURRENT LIABILITIES    
Trade accounts payable 9,256,392 9,261,238
Accrued liabilities 2,598,126 1,808,149
Billings in excess of costs and estimated earnings on uncompleted contracts 937,755 5,486,017
Federal and state income tax payable 2,017,644  
Current maturities of notes payable 5,802,513 6,316,852
Current portion of capital lease obligations 1,336,037 1,071,263
Total current liabilities 21,948,467 23,943,519
NOTES PAYABLE, less current maturities 5,328,892 4,718,492
CAPITAL LEASE OBLIGATIONS, less current portion 1,626,612 1,302,963
LONG-TERM DEFERRED TAX LIABILITY 7,257,576 4,787,623
COMMITMENTS AND CONTINGENCIES      
SHAREHOLDERS' EQUITY    
Preferred stock, $1.00 par value; 4,000,000 shares authorized; issued - none      
Common stock, $.01 par value; 25,000,000 shares authorized; 19,348,436 and 19,242,251 in each period 193,484 192,423
Additional paid-in capital 28,176,922 27,512,709
Retained earnings 35,499,541 24,666,326
Treasury stock, at cost, 37,820 and 37,803 shares in each period (257,394) (257,323)
Accumulated other comprehensive income 107,127 748,665
Total shareholders' equity 63,719,680 52,862,800
Total liabilities and shareholders' equity $ 99,881,227 $ 87,615,397