Other Balance Sheet Information (Tables)

9 Months Ended

Jun. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Accounts Receivable

The following is a summary of accounts receivable at June 30, 2014 and September 30, 2013 (in thousands):

	June 30, 2014			September 30, 2013
Accounts receivable	$	84,038		$	78,460
Less allowance for doubtful accounts	(1,100		)	(863		)
Less allowance for sales returns	(146		)	(114		)
	$	82,792		$	77,483

Summary of Inventories

The following is a summary of inventories at June 30, 2014 and September 30, 2013, excluding amounts related to discontinued operations (in thousands):

	June 30, 2014		September 30, 2013
Inventories
Raw materials and purchased parts	$	62,212	$	57,678
Work-in-process	23,206		19,991
Finished goods	17,651		16,742
	$	103,069	$	94,411

Product Warranty and Retrofit Activity on Gross Basis

Product warranty and retrofit activity on a gross basis for the three and nine months ended June 30, 2014 and 2013, excluding amounts related to discontinued operations, is as follows (in thousands):

Activity - Three Months Ended June 30, 2014
Balance at March 31, 2014		Adjustments for Acquisitions and Divestitures		Accruals		Costs Incurred			Balance at June 30, 2014
$	6,319	$	364	$	3,017	$	(2,879	)	$	6,821

Activity - Three Months Ended June 30, 2013
Balance at March 31, 2013		Adjustments for Acquisitions and Divestitures		Accruals		Costs Incurred			Balance at June 30, 2013
$	7,635	$	—	$	2,992	$	(3,010	)	$	7,617

Activity - Nine Months Ended June 30, 2014
Balance at September 30, 2013		Adjustments for Acquisitions and Divestitures		Accruals		Costs Incurred			Balance at June 30, 2014
$	7,260	$	364	$	7,167	$	(7,970	)	$	6,821

Activity - Nine Months Ended June 30, 2013
Balance at September 30, 2012		Adjustments for Acquisitions and Divestitures		Accruals		Costs Incurred			Balance at June 30, 2013
$	7,246	$	962	$	8,309	$	(8,900	)	$	7,617