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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Current assets |  |
Cash and cash equivalents | $ 5,343 | $ 23,846
Accounts receivable, net of allowances of $605 and $432, respectively | 283,008 | 234,642
Costs and estimated earnings in excess of billings on uncompleted contracts | 78,260 | 69,950
Current portion of receivable for insurance claims in excess of deductibles | 4,221 | 3,785
Refundable income taxes | 391 | 2,474
Other current assets | 8,513 | 8,202
Total current assets | 379,736 | 342,899
Property and equipment, net of accumulated depreciation of $231,391 and $209,466, respectively | 148,084 | 154,891
Goodwill | 46,994 | 46,781
Intangible assets, net of accumulated amortization of $5,183 and $4,684, respectively | 10,852 | 11,566
Receivable for insurance claims in excess of deductibles | 14,295 | 14,692
Investment in joint venture | 168 | 0
Other assets | 3,659 | 2,666
Total assets | 603,788 | 573,495
Current liabilities |  |
Current portion of capital lease obligations | 1,086 | 1,085
Accounts payable | 110,383 | 99,942
Billings in excess of costs and estimated earnings on uncompleted contracts | 28,919 | 42,321
Current portion of self insurance reserves | 13,138 | 10,492
Other current liabilities | 35,038 | 42,382
Total current liabilities | 188,564 | 196,222
Deferred income tax liabilities | 13,452 | 18,565
Long-term debt | 78,960 | 59,070
Self insurance reserves | 32,225 | 32,092
Capital lease obligations, net of current maturities | 2,629 | 3,833
Other liabilities | 919 | 539
Total liabilities | 316,749 | 310,321
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, 2017 and December 31, 2016 | 0 | 0
Common stock - $0.01 par value per share; 100,000,000 authorized shares; 16,464,757 and 16,333,139 shares issued and outstanding at December 31, 2017 and December 31, 2016, respectively | 163 | 162
Additional paid-in capital | 143,934 | 140,100
Accumulated other comprehensive income (loss) | (299) | (433)
Retained earnings | 143,241 | 123,345
Total stockholders' equity | 287,039 | 263,174
Total liabilities and stockholders' equity | $ 603,788 | $ 573,495

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- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Value of all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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