| Schedule of Segment Reporting Information, by Segment [Table Text Block] | 
  |   |    |     |    |    |     |    |    |     |    |    |     |    |     |    |    |      |    |    |      |    |    |   December 6, 2018  through  July 31,  2019    |    |    |   November 1, 2018  through  December 5,  2018    |    |    |       |    |     |    |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |     |   U.S. Concrete Pumping   |    |  $ |  58,354  |    |    |  $ |  45,288  |    |    |  $ |  124,969  |    |    |  $ |  16,659  |    |    |  $ |  118,424  |    |     |   U.K. Concrete Pumping   |    |    |  12,492  |    |    |    |  13,877  |    |    |    |  30,996  |    |    |    |  5,143  |    |    |    |  36,705  |    |     |   Eco-Pan   |    |    |  7,967  |    |    |    |  7,548  |    |    |    |  18,806  |    |    |    |  2,628  |    |    |    |  20,885  |    |     |   Corporate   |    |    |  626  |    |    |    |  625  |    |    |    |  1,634  |    |    |    |  242  |    |    |    |  1,875  |    |     |   Intersegment   |    |    |  (784  |  ) |    |    |  (689  |  ) |    |    |  (1,792  |  ) |    |    |  (276  |  ) |    |    |  (2,035  |  ) |     |   |    |  $ |  78,655  |    |    |  $ |  66,649  |    |    |  $ |  174,613  |    |    |  $ |  24,396  |    |    |  $ |  175,854  |    |     |   |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |      (Loss) income before income taxes    |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |     |   U.S. Concrete Pumping   |    |  $ |  (1,050  |  ) |    |  $ |  2,287  |    |    |  $ |  (14,946  |  ) |    |  $ |  (27,354  |  ) |    |  $ |  5,268  |    |     |   U.K. Concrete Pumping   |    |    |  1,353  |    |    |    |  959  |    |    |    |  290  |    |    |    |  207  |    |    |    |  1,808  |    |     |   Eco-Pan   |    |    |  329  |    |    |    |  2,826  |    |    |    |  (85  |  ) |    |    |  225  |    |    |    |  7,665  |    |     |   Corporate   |    |    |  208  |    |    |    |  454  |    |    |    |  1,113  |    |    |    |  155  |    |    |    |  1,620  |    |     |   |    |  $ |  840  |    |    |  $ |  6,526  |    |    |  $ |  (13,628  |  ) |    |  $ |  (26,767  |  ) |    |  $ |  16,361  |    |     |   |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |     |    |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |     |   U.S. Concrete Pumping   |    |  $ |  17,934  |    |    |  $ |  7,851  |    |    |  $ |  29,283  |    |    |  $ |  (24,565  |  ) |    |  $ |  28,699  |    |     |   U.K. Concrete Pumping   |    |    |  5,013  |    |    |    |  3,482  |    |    |    |  9,445  |    |    |    |  1,587  |    |    |    |  11,009  |    |     |   Eco-Pan   |    |    |  3,587  |    |    |    |  3,117  |    |    |    |  7,748  |    |    |    |  388  |    |    |    |  9,209  |    |     |   Corporate   |    |    |  626  |    |    |    |  520  |    |    |    |  1,633  |    |    |    |  180  |    |    |    |  1,809  |    |     |   |    |  $ |  27,160  |    |    |  $ |  14,969  |    |    |  $ |  48,109  |    |    |  $ |  (22,410  |  ) |    |  $ |  50,726  |    |      
  |   |    |     |    |    |     |    |    |     |    |    |     |    |     |    |    |      |    |    |      |    |    |   December 6, 2018  through  July 31,  2019    |    |    |   November 1, 2018  through  December 5,  2018    |    |    |       |    |      Depreciation and amortization    |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |     |   U.S. Concrete Pumping   |    |  $ |  9,938  |    |    |  $ |  1,115  |    |    |  $ |  21,471  |    |    |  $ |  1,635  |    |    |  $ |  10,904  |    |     |   U.K. Concrete Pumping   |    |    |  2,864  |    |    |    |  1,498  |    |    |    |  7,161  |    |    |    |  890  |    |    |    |  6,042  |    |     |   Eco-Pan   |    |    |  3,257  |    |    |    |  291  |    |    |    |  7,832  |    |    |    |  163  |    |    |    |  1,544  |    |     |   Corporate   |    |    |  418  |    |    |    |  62  |    |    |    |  520  |    |    |    |  25  |    |    |    |  185  |    |     |   |    |  $ |  16,477  |    |    |  $ |  2,967  |    |    |  $ |  36,984  |    |    |  $ |  2,713  |    |    |  $ |  18,675  |    |     |   |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |     |    |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |     |   U.S. Concrete Pumping   |    |  $ |  (9,046  |  ) |    |  $ |  (4,449  |  ) |    |  $ |  (22,758  |  ) |    |  $ |  (1,154  |  ) |    |  $ |  (12,527  |  ) |     |   U.K. Concrete Pumping   |    |    |  (796  |  ) |    |    |  (1,024  |  ) |    |    |  (1,994  |  ) |    |    |  (490  |  ) |    |    |  (3,159  |  ) |     |   Eco-Pan   |    |    |  (1  |  ) |    |    |  (0  |  ) |    |    |  (1  |  ) |    |    |  -  |    |    |    |  -  |    |     |   Corporate   |    |    |  -  |    |    |    |  (4  |  ) |    |    |  -  |    |    |    |  -  |    |    |    |  (4  |  ) |     |   |    |  $ |  (9,843  |  ) |    |  $ |  (5,477  |  ) |    |  $ |  (24,753  |  ) |    |  $ |  (1,644  |  ) |    |  $ |  (15,690  |  ) |     |   |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |     | 
   
Transaction costs including debt extinguishment    |    |    |     |   |     |    |     |   |     |    |     |   |     |    |     |   |     |     |   U.S. Concrete Pumping   |    |  $ |  1,458  |    |    |  $ |  1,395  |    |    |  $ |  1,458  |    |    |  $ |  -  |    |    |  $ |  -  |    |     |   Corporate   |    |    |  (1,282  |  ) |    |    |  -  |    |    |    |  -  |    |    |    |  30,562  |    |    |    |  2,520  |    |     |   |    |  $ |  176  |    |    |  $ |  1,395  |    |    |  $ |  1,458  |    |    |  $ |  30,562  |    |    |  $ |  2,520  |    |      
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| Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] | 
  |   |    |     |    |    |     |    |    |     |    |    |     |    |     |    |    |      |    |    |      |    |    |   December 6, 2018  through  July 31,  2019    |    |    |   November 1, 2018  through  December 5,  2018    |    |    |       |    |     |    |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |    |     |     |     |     |   U.S.   |    |  $ |  66,163  |    |    |  $ |  52,771  |    |    |  $ |  143,617  |    |    |  $ |  19,253  |    |    |  $ |  139,149  |    |     |   U.K.   |    |    |  12,492  |    |    |    |  13,877  |    |    |    |  30,996  |    |    |    |  5,143  |    |    |    |  36,705  |    |     |   |    |  $ |  78,655  |    |    |  $ |  66,649  |    |    |  $ |  174,613  |    |    |  $ |  24,396  |    |    |  $ |  175,854  |    |      
  |   |    |     |    |    |     |    |     |   |    |     |    |    |     |    |     |    |    |     |    |    |     |    |     Property, plant and equipment, net  |    |     |     |     |    |     |     |     |     |   U.S.   |    |  $ |  256,964  |    |    |  $ |  167,368  |    |     |   U.K.   |    |    |  40,121  |    |    |    |  34,547  |    |     |   |    |  $ |  297,085  |    |    |  $ |  201,915  |    |      
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