Note 17 - Segment Reporting - Operating Information (Details) - USD ($) |
1 Months Ended | 3 Months Ended | 8 Months Ended | 9 Months Ended | |
|---|---|---|---|---|---|
Dec. 05, 2018 |
Jul. 31, 2019 |
Jul. 31, 2018 |
Jul. 31, 2019 |
Jul. 31, 2018 |
|
| Revenue | $ 24,396,000 | $ 78,655,000 | $ 66,649,000 | $ 174,613,000 | $ 175,854,000 |
| Interest income (expense) | (1,644,000) | (9,843,000) | (5,477,000) | (24,753,000) | (15,690,000) |
| Transaction costs | 30,562,000 | 176,000 | 1,395,000 | 1,458,000 | 2,520,000 |
| Corporate, Non-Segment [Member] | |||||
| Revenue | 242,000 | 626,000 | 625,000 | 1,634,000 | 1,875,000 |
| (Loss) income before income taxes | 155,000 | 208,000 | 454,000 | 1,113,000 | 1,620,000 |
| EBITDA | 180,000 | 626,000 | 520,000 | 1,633,000 | 1,809,000 |
| Depreciation and amortization | 25,000 | 418,000 | 62,000 | 520,000 | 185,000 |
| Interest income (expense) | (4,000) | (4,000) | |||
| Transaction costs | 30,562,000 | (1,282,000) | 2,520,000 | ||
| Intersegment Eliminations [Member] | |||||
| Revenue | (276,000) | (784,000) | (689,000) | (1,792,000) | (2,035,000) |
| (Loss) income before income taxes | (26,767,000) | 840,000 | 6,526,000 | (13,628,000) | 16,361,000 |
| EBITDA | (22,410,000) | 27,160,000 | 14,969,000 | 48,109,000 | 50,726,000 |
| Depreciation and amortization | 2,713,000 | 16,477,000 | 2,967,000 | 36,984,000 | 18,675,000 |
| US Concrete Pumping [Member] | Operating Segments [Member] | |||||
| Revenue | 16,659,000 | 58,354,000 | 45,288,000 | 124,969,000 | 118,424,000 |
| (Loss) income before income taxes | (27,354,000) | (1,050,000) | 2,287,000 | (14,946,000) | 5,268,000 |
| EBITDA | (24,565,000) | 17,934,000 | 7,851,000 | 29,283,000 | 28,699,000 |
| Depreciation and amortization | 1,635,000 | 9,938,000 | 1,115,000 | 21,471,000 | 10,904,000 |
| Interest income (expense) | (1,154,000) | (9,046,000) | (4,449,000) | (22,758,000) | (12,527,000) |
| Transaction costs | 1,458,000 | 1,395,000 | 1,458,000 | ||
| UK Concrete Pumping [Member] | Operating Segments [Member] | |||||
| Revenue | 5,143,000 | 12,492,000 | 13,877,000 | 30,996,000 | 36,705,000 |
| (Loss) income before income taxes | 207,000 | 1,353,000 | 959,000 | 290,000 | 1,808,000 |
| EBITDA | 1,587,000 | 5,013,000 | 3,482,000 | 9,445,000 | 11,009,000 |
| Depreciation and amortization | 890,000 | 2,864,000 | 1,498,000 | 7,161,000 | 6,042,000 |
| Interest income (expense) | (490,000) | (796,000) | (1,024,000) | (1,994,000) | (3,159,000) |
| Eco-Pan [Member] | Operating Segments [Member] | |||||
| Revenue | 2,628,000 | 7,967,000 | 7,548,000 | 18,806,000 | 20,885,000 |
| (Loss) income before income taxes | 225,000 | 329,000 | 2,826,000 | (85,000) | 7,665,000 |
| EBITDA | 388,000 | 3,587,000 | 3,117,000 | 7,748,000 | 9,209,000 |
| Depreciation and amortization | 163,000 | 3,257,000 | 291,000 | 7,832,000 | 1,544,000 |
| Interest income (expense) | $ (1,000) | $ 0 | $ (1,000) | ||