CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net sales:
Products	$ 167,143	$ 170,566	$ 466,071	$ 451,329
Services	194,726	204,674	574,184	603,748
Total net sales	361,869	375,240	1,040,255	1,055,077
Costs and expenses:
Products	120,575	108,785	334,590	328,422
Services	157,781	164,053	464,505	478,647
Selling, general and administrative expenses	60,094	68,632	183,208	206,897
Research and development	16,901	8,521	38,779	18,146
Amortization of purchased intangibles	7,865	9,666	25,093	24,620
Restructuring costs	350	1,690	1,950	1,615
Total costs and expenses	363,566	361,347	1,048,125	1,058,347
Operating income (loss)	(1,697)	13,893	(7,870)	(3,270)
Other income (expense):
Interest and dividend income	249	415	719	1,152
Interest expense	(4,357)	(3,486)	(12,202)	(7,403)
Other income (expense), net	1,667	(1,930)	722	(1,532)
Income (loss) before income taxes	(4,138)	8,892	(18,631)	(11,053)
Income tax provision (benefit)	17,819	4,394	5,733	(20,281)
Net income (loss)	$ (21,957)	$ 4,498	$ (24,364)	$ 9,228
Net income (loss) per share:
Basic (in dollars per share)	$ (0.81)	$ 0.17	$ (0.90)	$ 0.34
Diluted (in dollars per share)	$ (0.81)	$ 0.17	(0.90)	0.34
Dividends per common share (in dollars per share)			$ 0.14	$ 0.14
Weighted average shares used in per share calculations:
Basic (in shares)	27,110	26,977	27,100	26,971
Diluted (in shares)	27,110	27,058	27,100	27,010