Reportable Segments - Schedule (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 363,225	$ 335,208
Gross profit	98,682	94,524
Operating and other expenses	80,516	81,990
Income from operations, before income taxes	18,166	12,534
Tech
Segment Reporting Information [Line Items]
Revenue	279,560	266,784
Gross profit	74,280	72,454
FA
Segment Reporting Information [Line Items]
Revenue	83,665	68,424
Gross profit	$ 24,402	$ 22,070

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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