Business Combinations - Summary of Business Acquisitions (Details) - USD ($) $ in Thousands									3 Months Ended		9 Months Ended
	Sep. 13, 2021	Jun. 07, 2021	Apr. 20, 2021	Apr. 13, 2021	Mar. 01, 2021	Aug. 31, 2020	Aug. 10, 2020	Feb. 29, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Cash Paid											$ 96,141	$ 38,825
Seller Obligations											18,987	6,969
Total  Purchase Price											115,128	45,794
Revenue									$ 23,188	$ 9,630	43,966	14,201
Net Income (Loss)									699	(90)	2,295	220
IWI
Business Acquisition [Line Items]
Cash Paid					$ 42,098						42,098
Seller Obligations					5,959						5,959
Total  Purchase Price					$ 48,057
Revenue									10,556		24,315
Net Income (Loss)									590		2,068
Alert
Business Acquisition [Line Items]
Cash Paid				$ 5,850							5,850
Seller Obligations				2,980							2,980
Total  Purchase Price				$ 8,830
Revenue									4,764		8,890
Net Income (Loss)									2		147
Alpine
Business Acquisition [Line Items]
Cash Paid			$ 7,945								7,945
Seller Obligations			2,208								2,208
Total  Purchase Price			$ 10,153
Revenue									3,045		4,996
Net Income (Loss)									263		216
GCP
Business Acquisition [Line Items]
Cash Paid		$ 9,700									9,700
Seller Obligations		1,427									1,427
Total  Purchase Price		$ 11,127
Revenue									2,624		3,270
Net Income (Loss)									(152)		(118)
Five Star
Business Acquisition [Line Items]
Cash Paid	$ 26,308										26,308
Seller Obligations	5,466										5,466
Total  Purchase Price	$ 31,774
Revenue									1,243		1,243
Net Income (Loss)									25		25
Other
Business Acquisition [Line Items]
Cash Paid											4,240	5,035
Seller Obligations											947	1,538
Total  Purchase Price											5,187	6,573
Revenue									956	1,879	1,252	2,643
Net Income (Loss)									$ (29)	(252)	$ (43)	(291)
Royals
Business Acquisition [Line Items]
Cash Paid								$ 7,590				7,590
Seller Obligations								2,500				2,500
Total  Purchase Price								$ 10,090
Revenue										2,843		6,650
Net Income (Loss)										279		628
Energy One
Business Acquisition [Line Items]
Cash Paid							$ 13,200					13,200
Seller Obligations							1,595					1,595
Total  Purchase Price							$ 14,795
Revenue										2,853		2,853
Net Income (Loss)										(202)		(202)
Storm Master
Business Acquisition [Line Items]
Cash Paid						$ 13,000						13,000
Seller Obligations						1,336						1,336
Total  Purchase Price						$ 14,336
Revenue										2,055		2,055
Net Income (Loss)										$ 85		$ 85