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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Cash flows from operating activities: |  |  |
Net income | $ 69,110 | $ 67,953 | $ 58,178
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 21,302 | 21,575 | 16,340
Impairment of trade name | 2,904 |  |
Deferred taxes | 16,438 | 8,786 | 18,821
Compensation expense related to share-based compensation plans | 7,667 | 6,539 | 4,788
(Gain) loss on sale of assets | (167) | 108 | (17)
Excess tax benefits from share based compensation | (13) | (29) |
Changes in operating assets and liabilities, net of effects of acquisitions: |  |  |
Restricted investments | (3,536) | (2,895) | (724)
Accounts receivable, net | (25,420) | (22,429) | (45,047)
Prepaid taxes | (308) | 2,253 | (2,097)
Prepaid expenses and other current assets | (2,137) | (1,562) | (1,728)
Other assets | (682) | 459 | (33)
Accounts payable | 27,635 | 7,438 | 23,095
Accrued expenses | 1,736 | 2,779 | 2,989
Non-current liabilities | 2,888 | 1,942 | 301
Net cash provided by operating activities | 117,417 | 92,917 | 74,866
Cash flows from investing activities: |  |  |
Proceeds from sale of equipment | 1,837 | 1,071 | 410
Purchases of property and equipment | (110,917) | (56,882) | (55,010)
Cash used in acquisitions, net of cash acquired |  | (550) | (85,182)
Net cash used in investing activities | (109,080) | (56,361) | (139,782)
Cash flows from financing activities: |  |  |
Proceeds from issuance of debt | 9,120 |  |
Repayments of long term debt | (874) |  |
Proceeds from stock options exercised | 41 | 69 | 86
Stock tendered for payments of withholding taxes | (2,634) | (1,812) | (1,523)
Purchase of treasury stock | (13,791) | (11,208) |
Capital lease payments | (2,329) | (2,454) | (729)
Excess tax benefits from share-based compensation | 336 | 523 | 1,034
Net cash used in financing activities | (10,131) | (14,882) | (1,132)
Effect of exchange rate changes on cash and cash equivalents | (2) | (5) | (5)
Net (decrease) increase in cash and cash equivalents | (1,796) | 21,669 | (66,053)
Cash and cash equivalents beginning of the year | 70,760 | 49,091 | 115,144
Cash and cash equivalents end of the year | 68,964 | 70,760 | 49,091
Supplemental disclosures of cash paid for: |  |  |
Interest | 1,201 | 1,200 | 541
Income taxes | $ 29,728 | $ 28,638 | $ 18,629

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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from sale of machinery and equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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