Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Operating activities
Net income	$ 35,364	$ 47,166
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	18,138	16,022
Amortization of other intangible assets	8,068	11,517
Acquisition-related contingent consideration	(1,848)	(6,721)
Provision for doubtful accounts	8,671	7,478
Non-cash share-based compensation	15,194	17,046
Non-cash interest expense	1,348	1,349
Other	(368)	(197)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, billed and unbilled	(115,787)	(58,827)
Notes receivable	(22,559)	(11,113)
Prepaid expenses and other assets	8,860	(1,485)
Accounts payable, accrued expenses and other	2,645	(1,354)
Income taxes	4,832	14,740
Accrued compensation	(47,418)	(10,467)
Billings in excess of services provided	7,756	(5,785)
Net cash (used in) provided by operating activities	(77,104)	19,369
Investing activities
Payments for acquisition of businesses, net of cash received	(15,611)	(40,512)
Purchases of property and equipment	(21,778)	(14,130)
Other	(6)	21
Net cash used in investing activities	(37,395)	(54,621)
Financing activities
Purchase and retirement of common stock	(4,367)	(28,758)
Net issuance of common stock under equity compensation plans	(2,692)	1,245
Deposits	11,580
Other	(891)	(616)
Net cash (used in) provided by financing activities	3,630	(28,129)
Effect of exchange rate changes on cash and cash equivalents	(552)	(850)
Net decrease in cash and cash equivalents	(111,421)	(64,231)
Cash and cash equivalents, beginning of period	205,833	156,785
Cash and cash equivalents, end of period	94,412	92,554
Supplemental cash flow disclosures
Cash paid for interest	23,541	22,903
Cash paid for income taxes, net of refunds	15,743	18,446
Non-cash investing and financing activities:
Issuance of stock units under incentive compensation plans	1,674	3,005
Issuance of common stock to acquire businesses		$ 2,883

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.