Business Combinations - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands					1 Months Ended	6 Months Ended
	Jun. 07, 2021	Apr. 20, 2021	Apr. 13, 2021	Feb. 29, 2020	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill						$ 249,982		$ 216,870
Less seller obligations						12,954	$ 4,037
Cash Paid						67,883	12,625
2021 Acquisitions
Business Acquisition [Line Items]
Cash						168
Accounts receivable						12,895
Inventories						2,330
Other current assets						3,139
Property and equipment						2,567
Intangibles						40,983
Goodwill						33,087
Other non-current assets						396
Accounts payable and other current liabilities						(4,920)
Deferred income tax liabilities						(6,537)
Long-term debt						(2,036)
Other long-term liabilities						(1,235)
Fair value of assets acquired and purchase price						80,837
Less seller obligations						12,954
Cash Paid						67,883
IWI
Business Acquisition [Line Items]
Cash						168
Accounts receivable						5,122
Inventories						1,157
Other current assets						2,354
Property and equipment						796
Intangibles						25,200
Goodwill						25,212
Other non-current assets						264
Accounts payable and other current liabilities						(3,349)
Deferred income tax liabilities						(6,537)
Long-term debt						(2,036)
Other long-term liabilities						(294)
Fair value of assets acquired and purchase price						48,057
Less seller obligations					$ 5,959	5,959
Cash Paid					$ 42,098	42,098
Alert
Business Acquisition [Line Items]
Cash						0
Accounts receivable						4,706
Inventories						742
Other current assets						738
Property and equipment						693
Intangibles						2,770
Goodwill						967
Other non-current assets						132
Accounts payable and other current liabilities						(1,184)
Deferred income tax liabilities						0
Long-term debt						0
Other long-term liabilities						(734)
Fair value of assets acquired and purchase price						8,830
Less seller obligations			$ 2,980			2,980
Cash Paid			$ 5,850			5,850
Alpine
Business Acquisition [Line Items]
Cash						0
Accounts receivable						0
Inventories						359
Other current assets						0
Property and equipment						726
Intangibles						5,543
Goodwill						3,582
Other non-current assets						0
Accounts payable and other current liabilities						(57)
Deferred income tax liabilities						0
Long-term debt						0
Other long-term liabilities						0
Fair value of assets acquired and purchase price						10,153
Less seller obligations		$ 2,208				2,208
Cash Paid		$ 7,945				7,945
GCP
Business Acquisition [Line Items]
Cash						0
Accounts receivable						3,067
Inventories						0
Other current assets						47
Property and equipment						206
Intangibles						5,670
Goodwill						2,663
Other non-current assets						0
Accounts payable and other current liabilities						(319)
Deferred income tax liabilities						0
Long-term debt						0
Other long-term liabilities						(207)
Fair value of assets acquired and purchase price						11,127
Less seller obligations	$ 1,427					1,427
Cash Paid	$ 9,700					9,700
Two Thousand Twenty Acquisitions
Business Acquisition [Line Items]
Cash							0
Accounts receivable							4,267
Inventories							583
Other current assets							575
Property and equipment							946
Intangibles							6,926
Goodwill							4,712
Other non-current assets							74
Accounts payable and other current liabilities							(1,255)
Deferred income tax liabilities							0
Long-term debt							0
Other long-term liabilities							(166)
Fair value of assets acquired and purchase price							16,662
Less seller obligations							4,037
Cash Paid							12,625
Royals
Business Acquisition [Line Items]
Cash							0
Accounts receivable							2,848
Inventories							305
Other current assets							430
Property and equipment							598
Intangibles							3,930
Goodwill							3,015
Other non-current assets							58
Accounts payable and other current liabilities							(1,059)
Deferred income tax liabilities							0
Long-term debt							0
Other long-term liabilities							(35)
Fair value of assets acquired and purchase price							10,090
Less seller obligations				$ 2,500			2,500
Cash Paid				$ 7,590			7,590
Other
Business Acquisition [Line Items]
Cash						0	0
Accounts receivable						0	1,419
Inventories						72	278
Other current assets						0	145
Property and equipment						146	348
Intangibles						1,800	2,996
Goodwill						663	1,697
Other non-current assets						0	16
Accounts payable and other current liabilities						(11)	(196)
Deferred income tax liabilities						0	0
Long-term debt						0	0
Other long-term liabilities						0	(131)
Fair value of assets acquired and purchase price						2,670	6,572
Less seller obligations						380	1,537
Cash Paid						$ 2,290	$ 5,035