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Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operating activities |  |  |
Net income | $ 216,199,000 | $ 147,335,000 | $ 107,896,000
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 14,116,000 | 11,451,000 | 11,261,000
Stock-based compensation | 19,275,000 | 21,743,000 | 26,755,000
Provision for losses on accounts receivable | 21,896,000 | 19,226,000 | 18,883,000
Amortization of deferred financing costs | 2,279,000 | 1,864,000 | 2,016,000
Amortization of intangible assets | 32,376,000 | 19,590,000 | 17,205,000
Amortization of premium on receivables | 3,265,000 | 3,266,000 | 3,263,000
Deferred income taxes | (3,337,000) | (2,920,000) | (3,952,000)
Loss on early extinguishment of debt |  | 2,669,000 |
Changes in operating assets and liabilities (net of acquisitions): |  |  |
Restricted cash | 2,088,000 | 6,579,000 | 5,639,000
Accounts receivable | (71,102,000) | (80,024,000) | (38,960,000)
Prepaid expenses and other current assets | (6,847,000) | 17,581,000 | (3,506,000)
Other assets | (46,553,000) | (1,935,000) | 63,000
Excess tax benefits related to stock-based compensation | (29,355,000) | (13,727,000) | (10,710,000)
Accounts payable, accrued expenses, and customer deposits | (18,840,000) | 126,927,000 | 3,902,000
Net cash provided by operating activities | 135,460,000 | 279,625,000 | 139,755,000
Investing activities |  |  |
Acquisitions, net of cash acquired | (190,447,000) | (333,763,000) | (10,022,000)
Purchases of property and equipment | (19,111,000) | (13,454,000) | (11,194,000)
Net cash used in investing activities | (209,558,000) | (347,217,000) | (21,216,000)
Financing activities |  |  |
Excess tax benefits related to stock-based compensation | 29,355,000 | 13,727,000 | 10,710,000
Net proceeds from initial public offering |  |  | 9,560,000
Payment of dividends on convertible preferred stock |  |  | (7,634,000)
Repurchase of common stock | (200,000,000) | (443,000) |
Proceeds from issuance of common stock | 27,187,000 | 8,477,000 | 538,000
Proceeds from (payments on) securitization facility, net | 18,000,000 | 136,000,000 | (74,000,000)
Deferred financing costs paid | (3,776,000) | (7,839,000) | (1,067,000)
Principal payments on notes payable | (30,414,000) | (338,965,000) | (24,634,000)
Proceeds from notes payable | 250,000,000 | 300,000,000 |
Principal payments on revolver | (480,000,000) |  |
Borrowings from revolver | 455,000,000 | 125,000,000 |
Borrowings on swing line of credit, net | (1,874,000) |  |
Other | (1,490,000) | (179,000) | (17,000)
Net cash provided by (used in) financing activities | 61,988,000 | 236,221,000 | (86,544,000)
Effect of foreign currency exchange rates on cash | 10,600,000 | 1,726,000 | (1,892,000)
Net (decrease) increase in cash | (1,510,000) | 170,355,000 | 30,103,000
Cash and cash equivalents at beginning of year | 285,159,000 | 114,804,000 | 84,701,000
Cash and cash equivalents at end of year | 283,649,000 | 285,159,000 | 114,804,000
Supplemental cash flow information |  |  |
Cash paid for interest | 14,760,000 | 14,961,000 | 21,409,000
Cash paid for income taxes | 38,169,000 | 49,205,000 | 45,998,000
Adoption of new accounting guidance related to asset securitization facility |  |  | $ 218,000,000

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- Definition The cash outflow for loan and debt issuance costs. + 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 Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 -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 15 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 + Details
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- Definition The cash outflow from a repayment of a borrowing having initial term of repayment of more than three months but less than one year or one operating cycle (if the normal cycle is more than one year). + 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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