Overview and Basis of Presentation - Additional Information (Detail)		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 17, 2021 $ / shares	Dec. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) Seat	Jun. 30, 2020	Jun. 30, 2021 USD ($) Segment Seat	Jun. 30, 2020 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Accounts Receivable, Credit Loss Expense (Reversal)					$ 236,000	$ 1,129,000
Accounts Receivable, Allowance for Credit Loss, Writeoff					200,000	400,000
Noncurrent Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)					$ 100,000	$ 0
Advertising costs policy			Expensed as incurred	Expensed as incurred	Expensed as incurred	Expensed as incurred
Number of reportable segments | Segment					2
Description of agent distribution during COVID-19					As of the middle of July 2021, approximately 69% of agents assigned to the Company’s brick-and-mortar facilities have temporarily transitioned to a work-at-home model, 30% are working in centers and 1% of the Company’s agents are idle primarily due to the lack of technical infrastructure to work from home.
Proceeds from issuance of long-term debt						$ 23,000,000
Accounting Standards Update 2019-12 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
ASU adoption status			true		true
Change in accounting principle, accounting standards update, immaterial effect			true		true
ASU adoption date			Jan. 01, 2021		Jan. 01, 2021
Exit Of Leased Space [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of seats transitioned to at home | Seat			4,200		4,200
Impairment of operating lease right-of-use assets			$ 13,400,000		$ 13,400,000
Impairment of property and equipment, net			7,600,000		7,600,000
Impairment of operating lease right-of-use assets					700,000
Impairment of property and equipment, net					500,000
Sitel Worldwide Corporation [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Date of agreement	Jun. 17, 2021
Merger share price | $ / shares	$ 54.00
Sitel Worldwide Corporation [Member] | General and Administrative [Member] | Other Segment [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Merger transaction costs			$ 3,500,000		$ 3,500,000
Taylor Media Corp [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Purchase price		$ 104,900,000
Payments to acquire businesses, gross		$ 87,200,000
Effective date of acquisition		Dec. 31, 2020
Business Combination, Consideration Transferred, Liabilities Incurred		$ 17,700,000
Business Combination, Consideration Transferred, Liabilities Incurred, Outstanding Debt		200,000
Business Combination, Consideration Transferred, Liabilities Incurred, Deferred Purchase Price		$ 17,500,000
Business combination consideration transferred liabilities incurred payment terms		payable on December 31, 2027, the seventh anniversary of the closing. In the event TMC’s previous owner remains employed by the Company or one of its subsidiaries on December 31, 2022, the second anniversary of the closing, the deferred payment will be accelerated and due at that time
Business Combination, Cash Acquired		$ 2,200,000
Business Combination, Receivables Acquired		6,700,000
Business Combination, Intangible Assets Acquired		87,900,000
Business Combination, Noncurrent Assets Acquired		4,200,000
Business Combination, Goodwill Recognized		9,000,000.0
Business Combination, Liabilities Recognized		5,100,000
Taylor Media Corp [Member] | Revolving Credit Facility [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Proceeds from issuance of long-term debt		$ 63,000,000.0