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Selected Balance Sheet Data (Tables)
9 Months Ended
Jun. 30, 2012
Selected Balance Sheet Data [Abstract]  
Schedule of Selected Balance Sheet Data
 
June 30, 2012
 
September 30, 2011
Accounts receivable, net:
 
 
 
Accounts receivable
$
24,984

 
$
26,772

Less allowance for doubtful accounts
620

 
339

 
$
24,364

 
$
26,433

Inventories:
 
 
 
Raw materials
$
20,432

 
$
18,960

Work in process
448

 
653

Finished goods
5,422

 
4,373

 
$
26,302

 
$
23,986