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Commitments and Contingencies (Product Warranties) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Commitments And Contingencies Product Warranties Details |  |  |
Balance at beginning of year | $ 660 us-gaap_ProductWarrantyAccrual | $ 452 us-gaap_ProductWarrantyAccrual | $ 387 us-gaap_ProductWarrantyAccrual
Accruals for warranties | 185 us-gaap_ProductWarrantyExpense | 953 us-gaap_ProductWarrantyExpense | 611 us-gaap_ProductWarrantyExpense
Settlements | (364)us-gaap_ProductWarrantyAccrualPayments | (745)us-gaap_ProductWarrantyAccrualPayments | (546)us-gaap_ProductWarrantyAccrualPayments
Changes in estimate | (142)us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease | 0 us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease | 0 us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Balance at end of year | $ 339 us-gaap_ProductWarrantyAccrual | $ 660 us-gaap_ProductWarrantyAccrual | $ 452 us-gaap_ProductWarrantyAccrual

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- Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(5)) -URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(2)) -URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(4)) -URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249 + Details
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- Definition The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3,4)) -URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249 + Details
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