Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities
Net income (loss)	$ (10,594)	$ (36,986)	$ 103,903
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	32,638	33,919	28,582
Amortization and impairment of other intangible assets	22,954	22,586	22,371
Goodwill impairment charge	83,752	110,387
Acquisition-related contingent consideration	(10,869)	(3,064)	(6,465)
Provision for doubtful accounts	13,335	14,179	12,586
Non-cash share-based compensation	35,129	29,361	37,352
Non-cash interest expense and loss on extinguishment of debt	2,699	9,824	8,439
Other	(1,582)	(488)	(2,068)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, billed and unbilled	(56,290)	(3,691)	(94,178)
Notes receivable	(7,544)	(25,730)	(3,781)
Prepaid expenses and other assets	(6,784)	(1,895)	3,933
Accounts payable, accrued expenses and other	8,505	(12,458)	11,472
Income taxes	7,963	(6,816)	22,227
Accrued compensation	82,917	(21,074)	38,073
Billings in excess of services provided	(2,958)	12,134	(8,618)
Net cash provided by operating activities	193,271	120,188	173,828
Investing activities
Payments for acquisition of businesses, net of cash received	(55,498)	(62,893)	(62,346)
Purchases of property and equipment	(42,544)	(27,759)	(31,091)
Purchases of investments	(5,094)
Other	45	246	(211)
Net cash used in investing activities	(103,091)	(90,406)	(93,648)
Financing activities
Borrowings under revolving line of credit		75,000	25,000
Payments of revolving line of credit		(75,000)	(25,000)
Payments of long-term debt and capital lease obligations	(6,021)	(377,859)	(6,994)
Issuance of debt securities, net		292,608
Cash received for settlement of interest rate swaps			5,596
Purchase and retirement of common stock	(66,763)	(50,032)	(209,400)
Net issuance of common stock under equity compensation plans	29,392	1,598	11,109
Other	263	(4,561)	960
Net cash (used in) provided by financing activities	(43,129)	(138,246)	(198,729)
Effect of exchange rate changes and fair value adjustments on cash and cash equivalents	1,997	826	(1,598)
Net (decrease) increase in cash and cash equivalents	49,048	(107,638)	(120,147)
Cash and cash equivalents, beginning of period	156,785	264,423	384,570
Cash and cash equivalents, end of period	205,833	156,785	264,423
Supplemental cash flow disclosures
Cash paid for interest	48,156	57,082	50,655
Cash paid for income taxes, net of refunds	35,074	46,918	38,742
Non-cash investing and financing activities:
Issuance of common stock to acquire businesses	2,883	5,193
Issuance of stock units under incentive compensation plans	3,005	3,079	4,241
Unsettled repurchase and retirement of common stock	$ (4,367)

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets, combined with the amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of indefinite-lived intangible assets, other than goodwill, to fair value. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method.

No definition available.