Stock-Based Compensation (Schedule of Stock Options Outstanding and Exercisable) (Details) (Stock Option [Member], USD $)	12 Months Ended
Mar. 31, 2015
Number Outstanding	1,793,745
Number Exercisable	686,849
$2.04 - 4.68 [Member]
Exercise Price, minimum	$ 2.04
Exercise Price, maximum	$ 4.68
Number Outstanding	856,959
Weighted-Average Remaining Contractual Life (Years)	7 years 9 months 18 days
Weighted-Average Exercise Price	$ 3.36
Number Exercisable	473,531
Weighted-Average Exercise Price	$ 3.12
$4.80 - 6.24 [Member]
Exercise Price, minimum	$ 4.80
Exercise Price, maximum	$ 6.24
Number Outstanding	835,501
Weighted-Average Remaining Contractual Life (Years)	9 years 4 months 24 days
Weighted-Average Exercise Price	$ 4.92
Number Exercisable	121,676
Weighted-Average Exercise Price	$ 5.16
$6.36 - 11.76 [Member]
Exercise Price, minimum	$ 6.36
Exercise Price, maximum	$ 11.76
Number Outstanding	90,103
Weighted-Average Remaining Contractual Life (Years)	4 years 8 months 12 days
Weighted-Average Exercise Price	$ 7.92
Number Exercisable	80,772
Weighted-Average Exercise Price	$ 8.04
$12.60 - 26.40 [Member]
Exercise Price, minimum	$ 12.60
Exercise Price, maximum	$ 26.40
Number Outstanding	4,467
Weighted-Average Remaining Contractual Life (Years)	5 years 4 months 24 days
Weighted-Average Exercise Price	$ 19.44
Number Exercisable	4,155
Weighted-Average Exercise Price	$ 19.68
$51.60 - 99.72 [Member]
Exercise Price, minimum	$ 51.60
Exercise Price, maximum	$ 99.72
Number Outstanding	6,715
Weighted-Average Remaining Contractual Life (Years)	1 year 6 months
Weighted-Average Exercise Price	$ 55.44
Number Exercisable	6,715
Weighted-Average Exercise Price	$ 55.44

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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 (c)(iii)

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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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 (c)(1)(i)-(ii)

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

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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 (c)(1)(i)-(ii)

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

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- Definition

Weighted average remaining contractual term of outstanding stock options, 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 (e)(1)

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

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

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

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