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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

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