Earnings per Share

3 Months Ended

Mar. 31, 2012

Earnings per Share [Abstract]

Earnings per Share

(13)   Earnings Per Share

Basic earnings per share is computed by dividing net income attributable to CAI 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 shows the reconciliation of basic and diluted net income per share for the three months ended March 31, 2012 and 2011 (in thousands, except per share data):

	Three Months Ended March 31,
	2012		2011
Numerator
Net income attributable to CAI common stockholders used in the calculation of basic and diluted earnings per share	$	14,391	$	12,796
Denominator
Weighted average shares used in the calculation of basic earnings per share		19,295		19,295
Effect of dilutive securities		409		463
Weighted average shares used in the calculation of diluted earnings per share		19,704		19,758
Net income per share per share attributable to CAI common stockholders:
Basic	$	0.75	$	0.66
Diluted	$	0.73	$	0.65

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 granted to officers and directors because their effect would have been anti-dilutive.