Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net income	$ 59,321	$ 64,496
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	8,907	8,161
Amortization and impairment of intangible assets	2,268	2,801
Acquisition-related contingent consideration	(979)	1,289
Provision for expected credit losses	4,859	4,832
Share-based compensation	5,967	7,242
Amortization of debt discount and issuance costs and other	527	2,815
Deferred income taxes	2,379	3,612
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, billed and unbilled	(66,471)	(93,396)
Notes receivable	1,345	1,899
Prepaid expenses and other assets	(3,829)	1,900
Accounts payable, accrued expenses and other	3,096	(7,803)
Income taxes	1,116	9,355
Accrued compensation	(216,560)	(172,042)
Billings in excess of services provided	(5,724)	(1,745)
Net cash used in operating activities	(203,778)	(166,584)
Investing activities
Payments for acquisition of businesses, net of cash received	(6,698)	0
Purchases of property and equipment and other	(12,607)	(7,976)
Net cash used in investing activities	(19,305)	(7,976)
Financing activities
Borrowings under revolving line of credit	155,000	197,500
Repayments under revolving line of credit	(140,000)	(27,500)
Purchase and retirement of common stock	(3,098)	(46,133)
Share-based compensation tax withholdings and other	(6,916)	(6,798)
Payments for business acquisition liabilities	(2,680)	(3,374)
Deposits and other	1,855	2,721
Net cash provided by financing activities	4,161	116,416
Effect of exchange rate changes on cash and cash equivalents	(4,420)	(3,388)
Net decrease in cash and cash equivalents	(223,342)	(61,532)
Cash and cash equivalents, beginning of period	494,485	294,953
Cash and cash equivalents, end of period	271,143	233,421
Supplemental cash flow disclosures
Cash paid for interest	3,728	3,854
Cash paid for income taxes, net of refunds	13,471	7,283
Non-cash investing and financing activities:
Issuance of stock units under incentive compensation plans	1,664	2,603
Business acquisition liabilities not yet paid	5,370	0
Non-cash additions to property and equipment	$ 4,497	$ 0

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.