CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 129,008	$ 59,456
Adjustments to reconcile net income to net cash provided by operating activities-
Amortization of identifiable intangible assets	25,158	17,749
Depreciation expense	16,295	13,925
Change in right-of-use assets	10,444	8,554
Bad debt expense (benefit)	1,116	(429)
Deferred tax provision	6,311	5,449
Amortization of debt financing costs	441	267
Gain on sale of assets	(706)	(841)
Changes in the fair value of contingent earn-out obligations	(3,973)	(5,767)
Stock-based compensation	6,430	6,860
(Increase) decrease in-
Receivables, net	(179,871)	(6,841)
Inventories	(9,432)	(5,365)
Prepaid expenses and other current assets	839	13,037
Costs and estimated earnings in excess of billings and unbilled accounts receivable	(1,184)	(2,752)
Other noncurrent assets	23	(1,105)
Increase (decrease) in-
Accounts payable and accrued liabilities	38,082	(10,964)
Billings in excess of costs and estimated earnings	77,718	27,510
Other long-term liabilities	(8,407)	(8,674)
Net cash provided by operating activities	108,292	110,069
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(20,215)	(10,762)
Proceeds from sales of property and equipment	1,559	1,530
Cash paid for acquisitions, net of cash acquired	(39,373)	(11,742)
Payments for investments	(1,236)
Net cash used in investing activities	(59,265)	(20,974)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving credit facility	485,000	25,000
Payments on revolving credit facility	(345,000)	(80,000)
Payments on term loan	(120,000)	(15,000)
Payments on other debt	(7,821)	(8,765)
Payments on finance lease liabilities	(899)
Debt financing costs	(2,297)
Payments of dividends to stockholders	(9,699)	(8,341)
Share repurchase	(32,854)	(3,047)
Shares received in lieu of tax withholding	(3,247)	(2,363)
Proceeds from exercise of options		3,449
Deferred acquisition payments	(50)	(400)
Payments for contingent consideration arrangements	(1,807)	(865)
Net cash used in financing activities	(38,674)	(90,332)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	10,353	(1,237)
CASH AND CASH EQUIVALENTS, beginning of period	58,776	54,896
CASH AND CASH EQUIVALENTS, end of period	$ 69,129	$ 53,659