Earnings per Share

3 Months Ended

Mar. 31, 2013

Earnings per Share [Abstract]

Earnings per Share

(13)    Earnings Per Share

Basic earnings per share is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock; however, potential common equivalent shares are excluded if their effect is anti-dilutive.

The following table sets forth the reconciliation of basic and diluted net income per share for the three months ended March 31, 2013 and 2012 (in thousands, except per share data):

	Three Months Ended March 31,
	2013		2012
Numerator
Net income attributable to CAI common stockholders used in the calculation of basic and diluted earnings per share	$	16,067	$	14,391
Denominator
Weighted average shares used in the calculation of basic earnings per share		22,085		19,295
Effect of dilutive securities:
Stock options		583		409
Weighted average shares used in the calculation of diluted earnings per share		22,668		19,704
Net income per share attributable to CAI common stockholders:
Basic	$	0.73	$	0.75
Diluted	$	0.71	$	0.73

The calculation of diluted earnings per share for the three months ended March 31, 2013 excluded from the denominator 180,000 shares of stock options because their effect would have been anti-dilutive. The calculation of diluted earnings per share for the three months ended March 31, 2012 excluded from the denominator 220,000 shares of stock options because their effect would have been anti-dilutive.