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Consolidated Balance Sheets - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 9,557 | $ 23,853
Marketable securities, at fair value | 73,221 | 67,730
Accounts and notes receivable, less allowance for doubtful accounts of $11,985 and $6,911 as of December 31, 2017 and 2016, respectively | 378,720 | 271,276
Inventories and supplies | 42,393 | 37,800
Prepaid expenses and other assets | 23,515 | 13,965
Total current assets | 527,406 | 414,624
Property and equipment, net | 13,509 | 13,455
Goodwill | 51,084 | 44,438
Other intangible assets, less accumulated amortization of $12,853 and $14,672 as of December 31, 2017 and 2016, respectively | 30,881 | 14,409
Notes receivable — long-term portion | 15,476 | 7,531
Deferred compensation funding, at fair value | 28,885 | 24,119
Deferred income taxes | 7,498 | 9,822
Other noncurrent assets | 1,264 | 48
Total Assets | 676,003 | 528,446
Current liabilities: |  |
Accounts payable | 74,463 | 42,912
Accrued payroll, accrued and withheld payroll taxes | 32,139 | 22,303
Other accrued expenses | 4,561 | 4,397
Borrowings under line of credit | 35,382 | 0
Income taxes payable | 15,378 | 7,686
Accrued insurance claims | 22,245 | 23,573
Total current liabilities | 184,168 | 100,871
Accrued insurance claims — long-term portion | 62,454 | 64,080
Deferred compensation liability | 29,429 | 24,653
Commitments and contingencies |  |
STOCKHOLDERS’ EQUITY: |  |
Common Stock, $.01 par value; 100,000 shares authorized; 74,960 and 74,204 shares issued, and 73,436 and 72,601 shares outstanding as of December 31, 2017 and 2016, respectively | 750 | 742
Additional paid-in capital | 244,363 | 217,664
Retained earnings | 163,860 | 130,940
Accumulated other comprehensive income (loss), net of taxes | 837 | (319)
Common Stock in treasury, at cost, 1,524 shares and 1,603 shares as of December 31, 2017 and 2016, respectively | (9,858) | (10,185)
Total stockholders’ equity | 399,952 | 338,842
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY | $ 676,003 | $ 528,446

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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6787-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68074540&loc=d3e5879-108316 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 + Details
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