Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2022

Quarterly Financial Information Disclosure [Abstract]

Schedule Quarterly Financial Data

The following tables contain selected unaudited statements of operations and comprehensive income (loss) information for each quarter of 2022 and 2021. The following information reflects all normal recurring adjustments necessary for a fair presentation of the information for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future period.

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2022	(amounts in thousands, except per share data)
Revenue from services	$	788,732	$	753,561	$	636,098	$	628,218
Gross profit(a)	174,794		170,405		143,545		138,942
Net income attributable to common stockholders	61,983		52,894		34,793		38,791
Net income per share attributable to common stockholders - Basic(b)	$	1.67	$	1.41	$	0.94	$	1.06
Net income per share attributable to common stockholders - Diluted(b)	$	1.63	$	1.40	$	0.93	$	1.05

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2021	(amounts in thousands, except per share data)
Revenue from services	$	329,241	$	331,827	$	374,905	$	640,679
Gross profit(a)	71,465		72,590		83,794		147,150
Net income attributable to common stockholders	19,448		11,548		23,433		77,573
Net income per share attributable to common stockholders - Basic(b)	$	0.54	$	0.32	$	0.63	$	2.10
Net income per share attributable to common stockholders - Diluted (b)	$	0.53	$	0.31	$	0.62	$	2.07

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(a) Excludes depreciation and amortization.

(b) The sum of the quarterly per share amounts may not equal amounts reported for year-to-date due to the effects of rounding and changes in the number of weighted average shares outstanding used in the calculation.