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CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Current assets |  |
Cash and cash equivalents | $ 76,454 | $ 19,825
Accounts receivable, net of allowances of $1,132 and $1,305, respectively | 173,468 | 167,241
Costs and estimated earnings in excess of billings on uncompleted contracts | 40,519 | 61,773
Deferred income tax assets | 14,550 | 12,742
Receivable for insurance claims in excess of deductibles | 11,389 | 11,379
Refundable income taxes | 1,286 | 1,044
Other current assets | 6,283 | 4,396
Total current assets | 323,949 | 278,400
Property and equipment, net of accumulated depreciation of $115,679 and $88,042, respectively | 142,931 | 128,911
Goodwill | 46,599 | 46,599
Intangible assets, net of accumulated amortization of $2,893 and $2,558, respectively | 10,199 | 10,534
Other assets | 1,744 | 1,904
Total assets | 525,422 | 466,348
Current liabilities |  |
Accounts payable | 79,605 | 84,481
Billings in excess of costs and estimated earnings on uncompleted contracts | 52,952 | 32,589
Accrued self insurance | 39,111 | 39,583
Other current liabilities | 32,711 | 32,240
Total current liabilities | 204,379 | 188,893
Deferred income tax liabilities | 23,719 | 21,530
Other liabilities | 1,233 | 1,235
Total liabilities | 229,331 | 211,658
Commitments and contingencies |  |
Stockholders' equity |  |
Preferred stock-$0.01 par value per share; 4,000,000 authorized shares; none issued and outstanding at December 31, 2013 and 2012 |  |
Common stock-$0.01 par value per share; 100,000,000 authorized shares; 21,223,076 and 20,747,161 shares issued and outstanding at December 31, 2013 and 2012, respectively | 210 | 206
Additional paid-in capital | 161,202 | 154,564
Retained earnings | 134,679 | 99,920
Total stockholders' equity | 296,091 | 254,690
Total liabilities and stockholders' equity | $ 525,422 | $ 466,348

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