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Selected Quarterly Data (Unaudited)
12 Months Ended
Sep. 30, 2011
Quarterly Financial Information Disclosure [Abstract] 
Selected Quarterly Data (Unaudited)
Selected Quarterly Data (Unaudited)
 
 
First Quarter
 
Second Quarter
 
Third Quarter
 
Fourth Quarter
Fiscal Year 2011:
(in thousands, except per share amounts)
Revenue
$
53,712

 
$
61,253

 
$
71,871

 
$
59,868

Gross margin
$
19,597

 
$
24,703

 
$
26,116

 
$
20,242

Provision for income taxes
$
3,330

 
$
5,100

 
$
5,160

 
$
2,600

Net income attributable to Amtech Systems, Inc.
$
4,992

 
$
7,517

 
$
7,298

 
$
3,075

Comprehensive income attributable to Amtech Systems, Inc.
$
3,539

 
$
11,430

 
$
8,744

 
$
(1,927
)
Net income per share attributable to Amtech Systems, Inc.:
 
 
 
 
 
 
 
Basic
$
0.54

 
$
0.79

 
$
0.76

 
$
0.32

Shares used in calculation
9,278

 
9,487

 
9,576

 
9,581

Diluted
$
0.52

 
$
0.77

 
$
0.74

 
$
0.31

Shares used in calculation
9,609

 
9,781

 
9,852

 
9,778

 
 
 
 
 
 
 
 
Fiscal Year 2010:
(in thousands, except per share amounts)
Revenue
$
15,457

 
$
16,077

 
$
43,072

 
$
45,413

Gross margin
$
4,600

 
$
4,708

 
$
15,752

 
$
17,652

Provision for income taxes
$
50

 
$
140

 
$
2,330

 
$
3,630

Net income
$
80

 
$
206

 
$
3,876

 
$
5,401

Comprehensive income attributable to Amtech Systems, Inc.
$
(568
)
 
$
(1,967
)
 
$
257

 
$
10,198

Net income per share:
 
 
 
 
 
 
 
Basic
$
0.01

 
$
0.02

 
$
0.43

 
$
0.6

Shares used in calculation
8,972

 
9,018

 
9,021

 
9,077

Diluted
$
0.01

 
$
0.02

 
$
0.42

 
$
0.58

Shares used in calculation
9,059

 
9,239

 
9,231

 
9,376