Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net income	$ 110,749	$ 127,278
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	18,095	16,765
Amortization and impairment of intangible assets	5,005	5,655
Acquisition-related contingent consideration	133	(1,130)
Provision for expected credit losses	8,752	8,236
Share-based compensation	12,050	12,190
Amortization of debt discount and issuance costs and other	1,068	5,685
Deferred income taxes	2,713	9,802
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, billed and unbilled	(180,737)	(138,838)
Notes receivable	(1,985)	8,921
Prepaid expenses and other assets	(810)	6,728
Accounts payable, accrued expenses and other	13,854	(13,518)
Income taxes	(14,834)	6,695
Accrued compensation	(147,209)	(88,024)
Billings in excess of services provided	4,425	(7,471)
Net cash used in operating activities	(168,731)	(41,026)
Investing activities
Payments for acquisition of businesses, net of cash received	(6,698)	(9,833)
Purchases of property and equipment and other	(25,637)	(27,696)
Net cash used in investing activities	(32,335)	(37,529)
Financing activities
Borrowings under revolving line of credit	165,000	292,500
Repayments under revolving line of credit	(165,000)	(192,500)
Purchase and retirement of common stock	(3,098)	(46,133)
Share-based compensation tax withholdings and other	(14,827)	(7,475)
Payments for business acquisition liabilities	(4,161)	(7,496)
Deposits and other	4,887	602
Net cash provided by (used in) financing activities	(17,199)	39,498
Effect of exchange rate changes on cash and cash equivalents	(20,490)	979
Net decrease in cash and cash equivalents	(238,755)	(38,078)
Cash and cash equivalents, beginning of period	494,485	294,953
Cash and cash equivalents, end of period	255,730	256,875
Supplemental cash flow disclosures
Cash paid for interest	4,279	4,854
Cash paid for income taxes, net of refunds	42,440	18,742
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	1,093
Non-cash additions to property and equipment	$ 3,695	$ 4,150

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.