Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Schedule of Loss Per Share

The following table presents the components of basic and diluted earnings per share (in thousands, except per share amounts):

	Three Months Ended March 31,
	2023			2022
Net earnings attributable to Kirby	$	40,698		$	17,434
Undistributed earnings allocated to restricted shares		(2	)		(3	)
Earnings available to Kirby common stockholders – basic		40,696			17,431
Undistributed earnings allocated to restricted shares		2			3
Undistributed earnings reallocated to restricted shares		(2	)		(3	)
Earnings available to Kirby common stockholders – diluted	$	40,696		$	17,431
Shares outstanding:
Weighted average common stock issued and outstanding		59,981			60,182
Weighted average unvested restricted stock		(3	)		(9	)
Weighted average common stock outstanding – basic		59,978			60,173
Dilutive effect of stock options and restricted stock units		294			290
Weighted average common stock outstanding – diluted		60,272			60,463
Net earnings per share attributable to Kirby common stockholders:
Basic	$	0.68		$	0.29
Diluted	$	0.68		$	0.29