8. Earnings Per Share

ASC 260, Earnings Per Share (ASC 260), requires dual presentation of basic and diluted earnings per share on the face of the income statement. Basic earnings per share exclude dilution and are computed by dividing income by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock but not securities that are anti-dilutive, including stock options and SSARs with an exercise price greater than the average market price of the Company's common stock. Using the treasury stock method, diluted earnings per share include the incremental effect of SSARs, stock options, restricted shares, and those RSUs that are no longer subject to a market or performance condition. The total number of weighted-average common stock equivalents excluded from the diluted per share computations due to their anti-dilutive effects were 0.8 million and 0.9 million for the three months ended December 31, 2011 and 2010, respectively, and 2.2 million for both the six months ended December 31, 2011 and 2010. The PRSUs granted in September 2011 are excluded from the calculation of diluted earnings per share as the underlying shares are considered to be contingently issuable shares. These shares will be included in the calculation of diluted earnings per share beginning in the first reporting period in which the performance metric is achieved. The shares underlying the Notes were included in the computation of diluted earnings per share for the three and six months ended December 31, 2011 because the average share price was above the conversion price during those periods. The shares underlying the Notes were not included in the computation of diluted earnings per share for the three and six month periods ended December 31, 2010 because the conversion price of $54.65 exceeded the average share price during those periods. The Warrants were excluded from the computation of diluted earnings per share during all periods presented because the Warrants' exercise price of $68.31 was greater than the average market price of a share of Company common stock during the three and six month periods ended December 31, 2011 and 2010. The chart below shows the calculation of basic and diluted earnings per share (in thousands, except per share amounts):


	Three Months Ended December 31,				Six Months Ended December 31,
	2011		2010		2011		2010
Net income attributable to CACI	$	41,061	$	33,235	$	83,201	$	61,890
Weighted average number of basic shares outstanding
during the period		26,450		30,288		27,683		30,296
Dilutive effect of SSARs/stock options and
RSUs/restricted shares after application of treasury
stock method		816		618		871		708
Dilutive effect of the Notes		4		—		2		—
Weighted average number of diluted shares outstanding
during the period		27,270		30,906		28,556		31,004
Basic earnings per share	$	1.55	$	1.10	$	3.01	$	2.04
Diluted earnings per share	$	1.51	$	1.08	$	2.91	$	2.00

On August 29, 2011, we entered into an accelerated share repurchase agreement with Bank of America N.A. (BofA), under which we paid $209.7 million for 4 million shares of our common stock. Our effective per share purchase price will be based generally on the average of the daily volume weighted average prices per share of our common stock, less a discount, calculated during an averaging period which began August 25, 2011 and will last up to eleven months.

The total amount ultimately paid for these shares will not be known until the averaging period ends and a final settlement occurs. Upon final settlement, we will either receive a settlement amount or be required to remit a settlement amount, in cash or common stock, at our option. We recorded the $209.7 million payment to BofA as treasury stock in our consolidated balance sheet as of December 31, 2011.

Shares outstanding during the three and six months ended December 31, 2011, reflect the repurchase of shares of CACI's common stock under the accelerated share repurchase agreement described above and other share repurchase programs approved by the Company's Board of Directors. Shares outstanding during the three and six months ended December 31, 2010 reflect the repurchase of shares under other approved share repurchase programs.