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Business Combinations - Summary of Business Acquisitions (Details) - USD ($) $ in Thousands |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended
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May 23, 2022 | Apr. 11, 2022 | Mar. 01, 2022 | Jun. 07, 2021 | May 10, 2021 | Apr. 19, 2021 | Apr. 13, 2021 | Mar. 01, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash Paid |  |  |  |  |  |  |  |  |  |  | $ 76,109 | $ 96,141
Seller Obligations |  |  |  |  |  |  |  |  |  |  | 25,534 | 18,987
Total Purchase Price |  |  |  |  |  |  |  |  |  |  | 101,643 | 115,128
Revenue |  |  |  |  |  |  |  |  | $ 20,349 | $ 23,188 | 38,377 | 43,966
Net Income (Loss) |  |  |  |  |  |  |  |  | (844) | 699 | (387) | 2,295
Pisgah |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash Paid |  |  | $ 8,050 |  |  |  |  |  |  |  | 8,050 |
Seller Obligations |  |  | 1,878 |  |  |  |  |  |  |  | 1,878 |
Total Purchase Price |  |  | $ 9,928 |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 2,847 |  | 6,665 |
Net Income (Loss) |  |  |  |  |  |  |  |  | 285 |  | 638 |
Central Aluminum |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash Paid |  | $ 55,150 |  |  |  |  |  |  |  |  | 55,150 |
Seller Obligations |  | 22,927 |  |  |  |  |  |  |  |  | 22,927 |
Total Purchase Price |  | $ 78,077 |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 13,404 |  | 26,128 |
Net Income (Loss) |  |  |  |  |  |  |  |  | (1,048) |  | (805) |
Tri-County |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash Paid | $ 9,600 |  |  |  |  |  |  |  |  |  | 9,600 |
Seller Obligations | 473 |  |  |  |  |  |  |  |  |  | 473 |
Total Purchase Price | $ 10,073 |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 3,548 |  | 5,034 |
Net Income (Loss) |  |  |  |  |  |  |  |  | $ (40) |  | (179) |
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 |  |  |  |  |  | 3,309 | 4,240
Seller Obligations |  |  |  |  | 947 |  |  |  |  |  | 256 | 947
Total Purchase Price |  |  |  |  | $ 5,187 |  |  |  |  |  | 3,565 |
Revenue |  |  |  |  |  |  |  |  |  | 956 | 550 | 1,252
Net Income (Loss) |  |  |  |  |  |  |  |  |  | $ (29) | $ (41) | $ (43)

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