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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operating activities |  |  |
Net income (loss) | $ (36,986) | $ 103,903 | $ 65,984
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation and amortization | 33,919 | 28,582 | 31,334
Amortization and impairment of other intangible assets | 22,586 | 22,371 | 47,666
Goodwill impairment charge | 110,387 |  |
Acquisition-related contingent consideration | (3,064) | (6,465) | 1,190
Provision for doubtful accounts | 14,179 | 12,586 | 10,720
Non-cash share-based compensation | 29,361 | 37,352 | 35,246
Excess tax benefits from share-based compensation | (515) | (1,597) | (204)
Non-cash interest expense and loss on extinguishment of debt | 9,824 | 8,439 | 12,670
Other | 27 | (471) | 482
Changes in operating assets and liabilities, net of effects from acquisitions: |  |  |
Accounts receivable, billed and unbilled | (3,691) | (94,178) | (18,881)
Notes receivable | (25,730) | (3,781) | (22,159)
Prepaid expenses and other assets | (1,895) | 3,933 | 1,136
Accounts payable, accrued expenses and other | (12,458) | 11,472 | 18,611
Income taxes | (6,816) | 22,227 | 8,033
Accrued compensation | (21,074) | 38,073 | 9,357
Billings in excess of services provided | 12,134 | (8,618) | (6,131)
Net cash provided by operating activities | 120,188 | 173,828 | 195,054
Investing activities |  |  |
Payments for acquisition of businesses, net of cash received | (62,893) | (62,346) | (63,086)
Purchases of property and equipment | (27,759) | (31,091) | (22,600)
Proceeds from sale or maturity of short-term investments |  |  | 15,000
Other | 246 | (211) | (400)
Net cash used in investing activities | (90,406) | (93,648) | (71,086)
Financing activities |  |  |
Borrowings under revolving line of credit | 75,000 | 25,000 | 20,000
Payments of revolving line of credit | (75,000) | (25,000) | (20,000)
Payments of long-term debt and capital lease obligations | (377,859) | (6,994) | (209,747)
Issuance of debt securities, net | 292,608 |  | 390,445
Payments of debt financing fees | (2,848) |  | (3,054)
Cash received for settlement of interest rate swaps |  | 5,596 |
Purchase and retirement of common stock | (50,032) | (209,400) | (40,634)
Net issuance of common stock under equity compensation plans | 1,598 | 11,109 | 6,196
Excess tax benefit from share-based compensation | 515 | 1,597 | 204
Other | (2,228) | (637) | 442
Net cash (used in) provided by financing activities | (138,246) | (198,729) | 143,852
Effect of exchange rate changes and fair value adjustments on cash and cash equivalents | 826 | (1,598) | (2,122)
Net (decrease) increase in cash and cash equivalents | (107,638) | (120,147) | 265,698
Cash and cash equivalents, beginning of period | 264,423 | 384,570 | 118,872
Cash and cash equivalents, end of period | 156,785 | 264,423 | 384,570
Supplemental cash flow disclosures |  |  |
Cash paid for interest | 57,082 | 50,655 | 35,441
Cash paid for income taxes, net of refunds | 46,918 | 38,742 | 33,237
Non-cash investing and financing activities: |  |  |
Issuance of common stock to acquire businesses | 5,193 |  |
Issuance of notes payable to acquire businesses |  |  | 39,772
Issuance of stock units under incentive compensation plans | $ 3,079 | $ 4,241 | $ 6,531

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- Definition Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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=6943989&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition The cash outflow to pay off an obligation from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 Reference 3: 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=6943989&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + 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 (a),(b) -URI http://asc.fasb.org/extlink&oid=6943989&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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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 Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6943989&loc=d3e3602-108585 + Details
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