EARNINGS PER SHARE

3 Months Ended

Mar. 31, 2012

EARNINGS PER SHARE

EARNINGS PER SHARE

NOTE H — EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted loss per share:

	Three Months Ended
	March 31
	2012			2011
	($ thousands, except share and per share data)
Basic loss per share
Numerator:
Net loss attributable to Arkansas Best Corporation	$	(18,162	)	$	(12,808	)
Effect of unvested restricted stock awards	(34		)	(30		)
Adjusted net loss	$	(18,196	)	$	(12,838	)
Denominator:
Weighted-average shares	25,455,607			25,296,854
Loss per common share	$	(0.71	)	$	(0.51	)
Diluted loss per share
Numerator:
Net loss attributable to Arkansas Best Corporation	$	(18,162	)	$	(12,808	)
Effect of unvested restricted stock awards	(34		)	(30		)
Adjusted net loss	$	(18,196	)	$	(12,838	)
Denominator:
Weighted-average shares	25,455,607			25,296,854
Effect of dilutive securities	—			—
Adjusted weighted-average shares and assumed conversions	25,455,607			25,296,854
Loss per common share	$	(0.71	)	$	(0.51	)

Under the two-class method of calculating earnings per share, dividends paid and a portion of undistributed net income, but not losses, are allocated to unvested restricted stock and restricted stock units, which are considered participating securities. For the three months ended March 31, 2012 and 2011, outstanding stock awards of 0.8 million were not included in the diluted loss per share calculations because their inclusion would have the effect of decreasing the loss per share.