Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Estimated Economic Lives of Property and Equipment

We record property and equipment at cost. We capitalize major improvements and betterments, while maintenance, repairs and minor replacements are expensed as incurred. Depreciation or amortization is provided using the straight-line method over the following estimated economic lives of the assets:

	Estimated Economic Life
Leasehold improvements	Shorter of underlying lease term or asset life
Furniture and fixtures	2 – 7 years
Equipment	3 – 5 years
Software	3 – 10 years
Buildings	29 years

Reconciliation of Denominators of Basic and Diluted EPS Calculations

A reconciliation of the denominators of the basic and diluted EPS calculations follows (in thousands, except per share data):

	Years Ended December 31,
	2022		2021		2020
Numerator:
Net earnings	$	280,608	$	219,345	$	172,640
Denominator:
Weighted-average shares used to compute basic EPS	34,903		35,011		35,117
Dilutive potential common shares due to:
Dilutive RSUs, net of tax effect	251		399		327
Convertible senior notes	1,466		1,453		—
Weighted-average shares used to compute diluted EPS	36,620		36,863		35,444
Net earnings per share:
Basic	$	8.04	$	6.27	$	4.92
Diluted	$	7.66	$	5.95	$	4.87