Earnings Per Share

9 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings Per Share

Basic earnings per share (EPS) is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted EPS is computed similarly to basic EPS except that the denominator is increased to include the number of additional common shares that would have been outstanding if potentially dilutive common shares had been issued.

For the three and nine months ended June 30, 2011, options for 142,000 and 145,000 shares, respectively, are excluded from the diluted EPS calculations because they are anti-dilutive. For the three and nine months ended June 30, 2010, options for 157,000 and 235,000 shares, respectively, and 14,000 and 4,000 restricted stock award shares, respectively, are excluded from the diluted EPS calculations because they are anti-dilutive.

	Three Months Ended June 30,				Nine Months Ended June 30,
	2011		2010		2011		2010
	(in thousands, except per share amounts)				(in thousands, except per share amounts)
Basic Earnings Per Share Computation
Net income attributable to Amtech Systems, Inc.	$	7,298	$	3,876	$	19,807	$	4,160
Weighted Average Shares Outstanding:
Common stock	9,576		9,021		9,446		9,004
Basic earnings per share attributable to Amtech shareholders	$	0.76	$	0.43	$	2.10	$	0.46
Diluted Earnings Per Share Computation
Net income attributable to Amtech Systems, Inc.	$	7,298	$	3,876	$	19,807	$	4,160
Weighted Average Shares Outstanding:
Common stock	9,576		9,021		9,446		9,004
Common stock equivalents (1)	276		210		308		180
Diluted shares	9,852		9,231		9,754		9,184
Diluted earnings per share attributable to Amtech shareholders	$	0.74	$	0.42	$	2.03	$	0.45

(1) The number of common stock equivalents is calculated using the treasury stock method and the average market price during the period.