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Acquisitions - Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020 | Jul. 01, 2020 | Dec. 31, 2019
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Business Acquisition [Line Items] |  |  |  |
Goodwill identified | $ 1,180,737 | $ 1,171,219 |  | $ 235,177
Mobile Mini, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash and cash equivalents |  |  | $ 17,203 |
Trade receivables |  |  | 87,492 |
Inventories |  |  | 8,987 |
Prepaid expenses and other current assets |  |  | 13,717 |
Rental equipment |  |  | 1,032,672 |
Property, plant and equipment |  |  | 160,729 |
Operating lease assets |  |  | 92,054 |
Intangible assets |  |  | 374,500 |
Goodwill identified |  |  | 937,135 |
Other non-current assets |  |  | 2,520 |
Total identifiable assets acquired |  |  | 2,727,009 |
Accounts payable |  |  | (29,797) |
Accrued expenses |  |  | (40,335) |
Deferred revenue and customer deposits |  |  | (38,846) |
Operating lease liabilities |  |  | (89,968) |
Debt and finance lease liabilities |  |  | (897,244) |
Deferred tax liabilities |  |  | (276,555) |
Other long-term liabilities |  |  | (1,428) |
Total liabilities assumed |  |  | (1,374,173) |
Purchase Price |  |  | $ 1,352,836 |

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