Other Balance Sheet Information (Tables)

6 Months Ended

Mar. 31, 2012

Components of Other Selected Captions in Consolidated Balance Sheets

Components of other selected captions in the Consolidated Balance Sheets are as follows (in thousands):

	March 31, 2012		September 30, 2011
Accounts receivable	$	81,175	$	77,318
Less allowances		683		617
	$	80,492	$	76,701
Inventories, net
Raw materials and purchased parts	$	68,865	$	65,770
Work-in-process		23,539		29,460
Finished goods		12,661		12,424
	$	105,065	$	107,654

Product Warranty and Retrofit Activity on Gross Basis

Product warranty and retrofit activity on a gross basis for the three and six months ended March 31, 2012 and 2011 is as follows (in thousands):

Activity — Three Months Ended March 31, 2012

Balance December 31, 2011	Accruals	Settlements	Balance March 31, 2012
$7,293	$3,405	$(3,417)	$7,281

Activity — Three Months Ended March 31, 2011

Balance December 31, 2010	Accruals	Settlements	Balance March 31, 2011
$7,882	$2,412	$(2,627)	$7,667

Activity — Six Months Ended March 31, 2012

Balance September 30, 2011	Adjustments for acquisitions and  divestitures	Accruals	Settlements	Balance March 31, 2012
$7,438	$7	$6,923	$(7,087)	$7,281

Activity — Six Months Ended March 31, 2011

Balance September 30, 2010	Accruals	Settlements	Balance March 31, 2011
$8,195	$4,921	$(5,449)	$7,667