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Condensed Unaudited Consolidated Statements Of Cash Flows (USD $) | 6 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Cash flows from operating activities: |  |  |  |
Net income | $ 53,420,000 |  | $ 44,258,000 |
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |  |
Depreciation and amortization | 65,355,000 |  | 42,946,000 |
Stock-based compensation expense | 6,617,000 |  | 2,171,000 |
Excess tax benefit from stock-based compensation | (1,462,000) | [1] | (70,000) | [1]
Non-cash interest expense | 4,528,000 |  | 4,253,000 |
Write-off of unamortized financing costs on redeemed debt | 1,508,000 |  | 0 |
Provision for doubtful accounts | 2,491,000 |  | 1,275,000 |
Provision for inventory obsolescence | 360,000 |  | 976,000 |
Gain on sale of property and equipment | (1,355,000) |  | (898,000) |
Gain on sale of available for sale securities | (717,000) |  | 0 |
Impairment charges and loss on disposal, discontinued operations | 320,000 |  |  |
Impairment charges and loss on disposal, discontinued operations |  |  | 248,000 |
Changes in assets and liabilities, net of assets acquired and liabilities assumed: |  |  |  |
Accounts receivable | (178,566,000) |  | (245,975,000) |
Inventories | 17,124,000 |  | (7,729,000) |
Deferred tax assets and liabilities, net | 7,160,000 |  | 3,515,000 |
Other assets, current and non-current portion | 16,950,000 |  | (568,000) |
Accounts payable and accrued expenses | 14,869,000 |  | 158,446,000 |
Billings in excess of costs and earnings | 8,046,000 |  | (9,942,000) |
Other liabilities, current and non-current portion | (3,468,000) |  | 12,744,000 |
Net cash provided by (used in) operating activities | 14,567,000 |  | (4,244,000) |
Cash flows (used in) provided by investing activities: |  |  |  |
Cash paid for acquisitions, net, including contingent consideration | (133,392,000) |  | (15,862,000) |
Capital expenditures | (71,382,000) |  | (28,490,000) |
Proceeds from sale of property and equipment | 18,978,000 |  | 3,808,000 |
Proceeds from sale or redemption of investments | 5,025,000 |  | 0 |
Proceeds from disposal of business, net | 0 |  | 97,728,000 |
Investments in life insurance policies | (94,000) |  | (284,000) |
Net cash (used in) provided by investing activities | (180,865,000) |  | 56,900,000 |
Cash flows provided by (used in) financing activities: |  |  |  |
Proceeds from issuance of 4.875% senior notes | 400,000,000 |  | 0 |
Repayment of 7.625% senior notes | (150,000,000) |  | 0 |
Proceeds from credit facility | 499,666,000 |  | 422,550,000 |
Repayments of credit facility | (558,596,000) |  | (418,750,000) |
Repayments of other borrowings | (18,570,000) |  | (10,542,000) |
Proceeds from (repayment of) book overdrafts | 7,989,000 |  | (5,290,000) |
Payments of capital lease obligations | (21,139,000) |  | (9,668,000) |
Proceeds from stock option exercises and other share-based awards | 4,283,000 |  | 766,000 |
Excess tax benefit from stock-based compensation | 1,462,000 |  | 70,000 |
Purchases of treasury stock | 0 |  | (35,087,000) |
Payments for debt extinguishment, call premiums | (4,116,000) |  | 0 |
Payments of financing costs | (7,569,000) |  | (115,000) |
Net cash provided by (used in) financing activities | 153,410,000 |  | (56,066,000) |
Net decrease in cash and cash equivalents | (12,888,000) |  | (3,410,000) |
Net effect of currency translation on cash | (274,000) |  | (56,000) |
Cash and cash equivalents - beginning of period | 26,767,000 |  | 20,280,000 |
Cash and cash equivalents - end of period | 13,605,000 |  | 16,814,000 |
Cash and cash equivalents of discontinued operations | 310,000 |  | 386,000 |
Cash and cash equivalents of continuing operations | 13,295,000 |  | 16,428,000 |
Supplemental cash flow information: |  |  |  |
Interest paid | 17,756,000 |  | 13,726,000 |
Income taxes paid, net of refunds | 41,625,000 |  | 18,896,000 |
Supplemental disclosure of non-cash investing and financing information: |  |  |  |
Equipment acquired under capital lease | 56,622,000 |  | 26,729,000 |
Machinery and Equipment [Member] |  |  |  |
Supplemental disclosure of non-cash investing and financing information: |  |  |  |
Equipment acquired under financing arrangements | 23,406,000 |  | 2,204,000 |
Inventories [Member] |  |  |  |
Supplemental cash flow information: |  |  |  |
Non-cash transaction, value of consideration received | 0 |  | 12,005,000 |
Contracts Accounted for under Percentage of Completion [Member] |  |  |  |
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |  |
Provision for losses on construction projects, net | 1,387,000 |  | (9,894,000) |
Common Stock Outstanding [Member] |  |  |  |
Supplemental disclosure of non-cash investing and financing information: |  |  |  |
Value of shares withheld for payroll taxes under share-based compensation arrangements | 1,463,000 |  | 0 |
Investor [Member] | Common Stock Outstanding [Member] |  |  |  |
Supplemental cash flow information: |  |  |  |
Non-cash transaction, value of consideration received | $ 6,002,000 |  | $ 0 |
[1] | Excess tax benefits, which represent cash flows from tax deductions in excess of the tax effect of compensation expense recognized for stock options exercised and vested restricted shares, are classified as financing cash flows in the Company’s condensed unaudited consolidated statements of cash flows.

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