Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities
Net income	$ 54,918	$ 30,166
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	3,878	3,075
Amortization	11,977	13,385
Deferred income taxes	(389)	(963)
Non-cash stock compensation and retirement savings plan contributions	11,686	10,320
Amortization of debt discount and issuance costs	1,215	5,090
Adjustment to fair value of contingent consideration for purchase of businesses	(3,466)	4
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(18,458)	(16,366)
Other assets	(3,447)	(5,371)
Accounts payable	(5,977)	2,173
Other liabilities	(17,957)	(11,633)
Net cash provided by operating activities	33,980	29,880
Investing Activities
Purchase of property and equipment	(6,240)	(3,623)
Capitalization of internally developed software costs	(421)	(569)
Purchase of businesses, net of cash acquired	(67)	(12)
Net cash used in investing activities	(6,728)	(4,204)
Financing Activities
Payment for credit facility financing fees	0	(633)
Payment of contingent consideration for purchase of business	0	(4,208)
Proceeds from the sale of stock through the Employee Stock Purchase Plan	575	211
Purchases of treasury stock	(3,818)	(11,802)
Remittance of taxes withheld as part of a net share settlement of restricted stock vesting	(9,007)	(5,243)
Net cash used in financing activities	(12,250)	(21,675)
Effect of exchange rate on cash and cash equivalents	(544)	(519)
Change in cash and cash equivalents	14,458	3,482
Cash and cash equivalents at beginning of period	24,410	83,204
Cash and cash equivalents at end of period	38,868	86,686
Supplemental Disclosures:
Cash paid for income taxes	17,453	10,014
Cash paid for interest	523	1,455
Liability incurred for purchase of property and equipment	$ 3,628	$ 0