EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2014

EARNINGS PER SHARE [Abstract]

Components of basic and diluted earnings per share

The following table presents the components of basic and diluted earnings per share for the three months ended March 31, 2014 and 2013 (in thousands, except per share amounts):

	Three months ended March 31,
	2014			2013
Net earnings attributable to Kirby	$	62,246		$	56,578
Undistributed earnings allocated to restricted shares		(370	)		(401	)
Income available to Kirby common stockholders – basic		61,876			56,177
Undistributed earnings allocated to restricted shares		370			401
Undistributed earnings reallocated to restricted shares		(368	)		(399	)
Income available to Kirby common stockholders – diluted	$	61,878		$	56,179
Shares outstanding:
Weighted average common stock issued and outstanding		56,903			56,669
Weighted average unvested restricted stock		(338	)		(401	)
Weighted average common stock outstanding – basic		56,565			56,268
Dilutive effect of stock options		216			187
Weighted average common stock outstanding – diluted		56,781			56,455
Net earnings per share attributable to Kirby common stockholders:
Basic	$	1.09		$	1.00
Diluted	$	1.09		$	1.00