Stock-Based Compensation (Schedule of Stock Options Outstanding and Exercisable) (Details) - Stock Options [Member]	12 Months Ended
Mar. 31, 2016 $ / shares shares
Number Outstanding \| shares	3,999,325
Number Exercisable \| shares	1,333,944
$1.08 - 2.66 [Member]
Exercise Price, minimum	$ 1.08
Exercise Price, maximum	$ 2.66
Number Outstanding \| shares	331,687
Weighted-Average Remaining Contractual Life (Years)	7 years 6 months
Weighted-Average Exercise Price	$ 1.82
Number Exercisable \| shares	156,254
Weighted-Average Exercise Price	$ 2.32
$3.00 - 3.96 [Member]
Exercise Price, minimum	3.00
Exercise Price, maximum	$ 3.96
Number Outstanding \| shares	1,430,798
Weighted-Average Remaining Contractual Life (Years)	8 years 6 months
Weighted-Average Exercise Price	$ 3.14
Number Exercisable \| shares	521,916
Weighted-Average Exercise Price	$ 3.21
$4.32 - 4.92 [Member]
Exercise Price, minimum	4.32
Exercise Price, maximum	$ 4.92
Number Outstanding \| shares	759,506
Weighted-Average Remaining Contractual Life (Years)	8 years 4 months 24 days
Weighted-Average Exercise Price	$ 4.75
Number Exercisable \| shares	281,164
Weighted-Average Exercise Price	$ 4.71
$5.00 - 6.36 [Member]
Exercise Price, minimum	5.00
Exercise Price, maximum	$ 6.36
Number Outstanding \| shares	953,344
Weighted-Average Remaining Contractual Life (Years)	8 years 10 months 24 days
Weighted-Average Exercise Price	$ 5.05
Number Exercisable \| shares	206,780
Weighted-Average Exercise Price	$ 5.15
$7.80 - 7.92 [Member]
Exercise Price, minimum	7.80
Exercise Price, maximum	$ 7.92
Number Outstanding \| shares	507,554
Weighted-Average Remaining Contractual Life (Years)	8 years 2 months 12 days
Weighted-Average Exercise Price	$ 7.81
Number Exercisable \| shares	151,394
Weighted-Average Exercise Price	$ 7.84
$10.32 - 99.60 [Member]
Exercise Price, minimum	10.32
Exercise Price, maximum	$ 99.60
Number Outstanding \| shares	16,436
Weighted-Average Remaining Contractual Life (Years)	4 years 8 months 12 days
Weighted-Average Exercise Price	$ 16.43
Number Exercisable \| shares	16,436
Weighted-Average Exercise Price	$ 16.43

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.

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 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

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- Definition

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

+ 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)(iii)
-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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