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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2012 | Jun. 30, 2011
Cash flows from operating activities: |  |
Net income (loss) | $ (6,473) | $ 11,422
Adjustments to reconcile net income (loss) to net cash flows from operating activities |  |
Depreciation | 6,129 | 3,528
Amortization | 17,204 | 10,593
Deferred income taxes | (3,019) | 6,303
Stock-based compensation expense | 9,086 | 4,533
Excess tax benefit of stock options exercised | (2,828) | (1,066)
Other | (538) | 210
Changes in operating assets and liabilities, net of impact of acquisitions: |  |
Billed and accrued receivables, net | 7,509 | 6,456
Other current and noncurrent assets | 2,727 | 277
Accounts payable | 3,172 | (3,779)
Accrued employee compensation | (27,856) | (4,189)
Accrued liabilities | (13,278) | (5,085)
Current income taxes | (13,411) | (3,404)
Deferred revenue | 3,865 | 4,569
Other current and noncurrent liabilities | (356) | (4,884)
Net cash flows from operating activities | (18,067) | 25,484
Cash flows from investing activities: |  |
Purchases of property and equipment | (3,392) | (7,870)
Purchases of software and distribution rights | (2,172) | (5,288)
Alliance technical enablement expenditures |  | (256)
Acquisition of businesses, net of cash acquired | (275,380) | (16,850)
Other investments | (1,046) |
Net cash flows from investing activities | (281,990) | (30,264)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock | 738 | 628
Proceeds from exercises of stock options | 13,806 | 2,375
Excess tax benefit of stock options exercised | 2,828 | 1,066
Repurchases of common stock | (44,064) |
Repurchase of restricted stock for tax withholdings | (2,364) | (366)
Repayment of term portion of credit agreement | (6,250) |
Payments for debt issuance costs | (553) |
Payments on debt and capital leases | (4,578) | (867)
Net cash flows from financing activities | 254,563 | 2,836
Effect of exchange rate fluctuations on cash | (1,988) | 1,441
Net increase (decrease) in cash and cash equivalents | (47,482) | (503)
Cash and cash equivalents, beginning of period | 197,098 | 171,310
Cash and cash equivalents, end of period | 149,616 | 170,807
Supplemental cash flow information |  |
Income taxes paid, net | 17,036 | 11,862
Interest paid | 3,891 | 855
Revolving Credit Facility |  |
Cash flows from financing activities: |  |
Proceeds from credit agreement | 95,000 |
Term Credit Facility |  |
Cash flows from financing activities: |  |
Proceeds from credit agreement | $ 200,000 |

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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
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration