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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended	11 Months Ended
	Jan. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment					$ 0
Depreciation and amortization	$ 2,105,000	$ 35,918,000	$ 36,572,000	$ 61,059,000	70,681,000
Amortization Period	13 years 3 months 18 days
Gain (loss) on foreign currency exchange rates	$ 82,000			285,000	319,000
Accumulated Other Comprehensive Income Loss Net Of Tax		3,949,000			3,949,000	$ 2,484,000
Other Comprehensive Income (Loss)
Summary Of Significant Accounting Policies [Line Items]
Gain (loss) on foreign currency exchange rates	0.0	(1,300,000)	500,000	(8,200,000)	1,500,000
Operations and Comprehensive Income (Loss)
Summary Of Significant Accounting Policies [Line Items]
Gain (loss) on foreign currency exchange rates	100,000	(200,000)	(500,000)	(900,000)	$ (300,000)
Customer Lists
Summary Of Significant Accounting Policies [Line Items]
Useful life					14 years	14 years
Depreciation and amortization	$ 800,000	$ 16,400,000	17,700,000	29,600,000	$ 32,700,000
Customer Lists \| Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful life	7 years
Customer Lists \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful life	14 years
Trade Name [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful life		20 years			20 years
Depreciation and amortization	$ 0	$ 2,000,000.0	$ 2,000,000.0	$ 3,400,000	$ 4,000,000.0