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Represents the number of plans under which equity-based compensation is awarded by the entity.

+ References

No definition available.

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- Definition

The period of time over which performance targets need to be achieved to earn awards under equity-based compensation arrangements.

+ References

No definition available.

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- Definition

Represents the period of restriction for transfer of shares, awarded under the equity-based compensation arrangement.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28,29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Stock-based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 plan	Sep. 30, 2013
Stock Options
Stock-based Compensation
Number of plans which reserved shares of common stock for issuance to executives and key employees			4
Expiration period			10 years
Major components of stock based compensation expense
Stock-based compensation expense	$ 152	$ 281	$ 379	$ 577
Exercised (in shares)			6	28
Stock Options \| Cost of sales
Major components of stock based compensation expense
Stock-based compensation expense	61	135	169	273
Stock Options \| Selling, general and administrative expenses
Major components of stock based compensation expense
Stock-based compensation expense	86	137	201	284
Stock Options \| Research and development
Major components of stock based compensation expense
Stock-based compensation expense	5	9	9	20
Stock Options \| Minimum
Stock-based Compensation
Vesting period			1 year
Stock Options \| Maximum
Stock-based Compensation
Vesting period			3 years
Restricted Stock
Major components of stock based compensation expense
Stock-based compensation expense	87	41	288	337
Restricted Stock \| Executive leadership
Stock-based Compensation
Period of restriction for sale of shares			90 days
Restricted Stock \| Chief Executive Officer
Stock-based Compensation
Period of restriction for sale of shares			90 days
Restricted Stock \| Director
Stock-based Compensation
Period of restriction for sale of shares			90 days
Restricted Stock \| Cost of sales
Major components of stock based compensation expense
Stock-based compensation expense	21	(31)	44	32
Restricted Stock \| Selling, general and administrative expenses
Major components of stock based compensation expense
Stock-based compensation expense	66	72	244	305
LTIPs
Stock-based Compensation
Performance period			2 years
Major components of stock based compensation expense
Stock-based compensation expense	719	337	1,285	714
LTIPs \| Cost of sales
Major components of stock based compensation expense
Stock-based compensation expense	276	124	492	238
LTIPs \| Selling, general and administrative expenses
Major components of stock based compensation expense
Stock-based compensation expense	344	169	632	383
LTIPs \| Research and development
Major components of stock based compensation expense
Stock-based compensation expense	$ 99	$ 44	$ 161	$ 93
2013/2014 LTIP \| Restricted stock units
Stock-based Compensation
Vesting period			3 years
2014/2015 LTIP \| Restricted stock units
Stock-based Compensation
Vesting period			3 years