Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities:
Net Income	$ 13,060	$ 13,120
Adjustments to reconcile income to net cash provided by operating activities, net of acquisition impact:
Loss on dispositions of assets	20	50
Depreciation	7,850	6,660
Amortization of intangible assets	5,390	4,850
Amortization of debt issue costs	300	290
Deferred income taxes	2,200	2,570
Non-cash compensation expense	2,440	1,940
Debt financing and related expenses	200	0
Increase in receivables	(15,640)	(10,610)
Increase in inventories	(3,110)	(110)
Increase in prepaid expenses and other assets	(2,070)	(110)
Increase (decrease) in accounts payable and accrued liabilities	1,950	(14,780)
Other operating activities	3,150	(470)
Net cash provided by operating activities, net of acquisition impact	15,740	3,400
Cash Flows from Investing Activities:
Capital expenditures	(9,370)	(3,930)
Acquisition of businesses, net of cash acquired	0	(84,270)
Net proceeds from disposition of business, property and equipment	0	1,880
Net cash used for investing activities	(9,370)	(86,320)
Cash Flows from Financing Activities:
Proceeds from issuance of senior notes	400,000	0
Proceeds from borrowings on revolving credit facilities	0	198,290
Repayments of borrowings on revolving credit facilities	(48,620)	(48,330)
Debt financing fees	(6,150)	0
Shares surrendered upon exercise and vesting of equity awards to cover taxes	(1,770)	(1,830)
Payments to purchase common stock	(2,640)	(31,570)
Net cash provided by financing activities	340,820	116,560
Increase for the period	347,190	33,640
At beginning of period	73,950	172,470
At end of period	421,140	206,110
Supplemental disclosure of cash flow information:
Cash paid for interest	520	370
Cash paid for taxes	$ 1,160	$ 1,850