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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Net revenues:
Products	$ 190,821us-gaap_SalesRevenueGoodsNet	$ 173,974us-gaap_SalesRevenueGoodsNet	$ 347,309us-gaap_SalesRevenueGoodsNet	$ 317,450us-gaap_SalesRevenueGoodsNet
Services	67,008us-gaap_SalesRevenueServicesNet	62,434us-gaap_SalesRevenueServicesNet	128,917us-gaap_SalesRevenueServicesNet	125,232us-gaap_SalesRevenueServicesNet
Total net revenues	257,829us-gaap_Revenues	236,408us-gaap_Revenues	476,226us-gaap_Revenues	442,682us-gaap_Revenues
Cost of goods sold:
Product	126,366us-gaap_CostOfGoodsSold	118,781us-gaap_CostOfGoodsSold	233,790us-gaap_CostOfGoodsSold	222,374us-gaap_CostOfGoodsSold
Services	42,189us-gaap_CostOfServices	36,688us-gaap_CostOfServices	78,920us-gaap_CostOfServices	71,423us-gaap_CostOfServices
Total cost of goods sold	168,555us-gaap_CostOfGoodsAndServicesSold	155,469us-gaap_CostOfGoodsAndServicesSold	312,710us-gaap_CostOfGoodsAndServicesSold	293,797us-gaap_CostOfGoodsAndServicesSold
Gross profit	89,274us-gaap_GrossProfit	80,939us-gaap_GrossProfit	163,516us-gaap_GrossProfit	148,885us-gaap_GrossProfit
Operating expenses:
Selling, general and administrative	47,894us-gaap_SellingGeneralAndAdministrativeExpense	45,556us-gaap_SellingGeneralAndAdministrativeExpense	92,076us-gaap_SellingGeneralAndAdministrativeExpense	87,770us-gaap_SellingGeneralAndAdministrativeExpense
Research and development	13,240us-gaap_ResearchAndDevelopmentExpense	11,175us-gaap_ResearchAndDevelopmentExpense	25,910us-gaap_ResearchAndDevelopmentExpense	22,195us-gaap_ResearchAndDevelopmentExpense
Restructuring and other charges	2,079us-gaap_RestructuringCharges	2,179us-gaap_RestructuringCharges	2,805us-gaap_RestructuringCharges	6,418us-gaap_RestructuringCharges
Total operating expenses	63,213us-gaap_OperatingExpenses	58,910us-gaap_OperatingExpenses	120,791us-gaap_OperatingExpenses	116,383us-gaap_OperatingExpenses
Income from operations	26,061us-gaap_OperatingIncomeLoss	22,029us-gaap_OperatingIncomeLoss	42,725us-gaap_OperatingIncomeLoss	32,502us-gaap_OperatingIncomeLoss
Interest and other expense, net	(832)us-gaap_InterestExpense	(1,503)us-gaap_InterestExpense	(1,696)us-gaap_InterestExpense	(2,973)us-gaap_InterestExpense
Income before income taxes	25,229us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	20,526us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	41,029us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	29,529us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Provision for income taxes	6,988us-gaap_IncomeTaxExpenseBenefit	5,953us-gaap_IncomeTaxExpenseBenefit	11,539us-gaap_IncomeTaxExpenseBenefit	8,562us-gaap_IncomeTaxExpenseBenefit
Net income	$ 18,241us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 14,573us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 29,490us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 20,967us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Net income per share:
Basic (in dollars per share)	$ 0.92us-gaap_EarningsPerShareBasic	$ 0.73us-gaap_EarningsPerShareBasic	$ 1.49us-gaap_EarningsPerShareBasic	$ 1.05us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.89us-gaap_EarningsPerShareDiluted	$ 0.71us-gaap_EarningsPerShareDiluted	$ 1.44us-gaap_EarningsPerShareDiluted	$ 1.02us-gaap_EarningsPerShareDiluted
Shares used in per share calculation:
Basic (in shares)	19,811us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	19,961us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	19,815us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	19,966us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in shares)	20,487us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	20,589us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	20,506us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	20,604us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Weighted-Average Number of Common Shares Outstanding

-URI http://asc.fasb.org/extlink&oid=6528421

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