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Stock-Based Compensation - Summary of Mastech's Restricted Stock Unit Activity (Detail) - Restricted Stock Units Activity [Member] - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning outstanding balance	19,924	17,804	25,059
Awarded	40,130	19,924	13,979
Released	(34,730)	(17,804)	(21,234)
Forfeited	(7,403)
Ending outstanding balance	17,921	19,924	17,804

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- Definition

Number of non-option equity instruments released to participants.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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