Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted average number of common and dilutive common stock equivalent shares outstanding during the period. The Company's nonvested restricted stock units do not have nonforfeitable rights to dividends or dividend equivalents and are not considered participating securities that should be included in the computation of net income per share under the two-class method.

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share data):


	Three Months Ended March 31,				Six Months Ended March 31,
	2026		2025		2026		2025
Numerator
Net income	$	147,755	$	145,530	$	327,809	$	311,975
Denominator
Weighted average shares outstanding — basic	56,708		57,886		57,184		58,098
Dilutive effect of common shares from stock options and restricted stock units	590		878		552		815
Weighted average shares outstanding — diluted	57,298		58,764		57,736		58,913
Basic net income per share	$	2.61	$	2.51	$	5.73	$	5.37
Diluted net income per share	$	2.58	$	2.48	$	5.68	$	5.30

Anti-dilutive stock-based awards excluded from the calculations of diluted net income per share were not material for the three and six months ended March 31, 2026 and 2025.