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Consolidated Balance Sheets - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 26,025 | $ 9,557
Marketable securities, at fair value | 76,362 | 73,221
Accounts and notes receivable, less allowance for doubtful accounts of $47,209 and $11,985 as of December 31, 2018 and 2017, respectively | 341,838 | 378,720
Inventories and supplies | 41,443 | 42,393
Prepaid expenses and other assets | 22,468 | 23,515
Total current assets | 508,136 | 527,406
Property and equipment, net | 12,900 | 13,509
Goodwill | 51,084 | 51,084
Other intangible assets, less accumulated amortization of $17,216 and $12,853 as of December 31, 2018 and 2017, respectively | 26,518 | 30,881
Notes receivable – long–term portion, less allowance for doubtful accounts of $10,000 and $0 as of December 31, 2018 and 2017, respectively | 43,043 | 15,476
Deferred compensation funding, at fair value | 29,113 | 28,885
Deferred income taxes | 20,552 | 7,498
Other noncurrent assets | 1,257 | 1,264
Total assets | 692,603 | 676,003
Current liabilities: |  |
Accounts payable | 61,467 | 74,463
Accrued payroll, accrued and withheld payroll taxes | 35,198 | 32,139
Other accrued expenses | 8,890 | 4,561
Borrowings under line of credit | 30,000 | 35,382
Income taxes payable | 7,140 | 15,378
Accrued insurance claims | 20,696 | 22,245
Total current liabilities | 163,391 | 184,168
Accrued insurance claims — long-term portion | 58,904 | 62,454
Deferred compensation liability | 29,528 | 29,429
Commitments and contingencies |  |
STOCKHOLDERS’ EQUITY: |  |
Common Stock, $.01 par value; 100,000 shares authorized; 75,344 and 74,960 shares issued, and 73,877 and 73,436 shares outstanding as of December 31, 2018 and 2017, respectively | 753 | 750
Additional paid-in capital | 259,440 | 244,363
Retained earnings | 190,092 | 163,860
Accumulated other comprehensive income, net of taxes | 158 | 837
Common Stock in treasury, at cost, 1,467 shares and 1,524 shares as of December 31, 2018 and 2017, respectively | (9,663) | (9,858)
Total stockholders’ equity | 440,780 | 399,952
Total liabilities and stockholders' equity | $ 692,603 | $ 676,003

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