Employee Stock Purchase Plan [Abstract]

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- Definition

Employee Stock Purchase Plan, Employee Contribution, Percent Of Employees' Gross Pay

+ References

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- Definition

Employee Stock Purchase Plan, Exercise Price As A Percentage Of Fair Value

+ References

No definition available.

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- Definition

Employee Stock Purchase Plan, Maximum Purchase In Calendar Year

+ References

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- Definition

Employee Stock Purchase Plan, Maximum Purchase In Single Transaction, Shares

+ References

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- Definition

Employee Stock Purchase Plan, Share Reserved For Future Issuance

+ References

No definition available.

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- Definition

Employee Stock Purchase Plan, Shares Issued

+ References

No definition available.

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- Definition

Share based awards.

+ References

No definition available.

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- Definition

Share based payment award option forfeitures in period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment awards options vested in period total fair value.

+ 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 S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Topic 718

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-Paragraph 2

-Subparagraph (h)(1)(i)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(2)(iii)(1)

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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)(2)(i)-(ii)

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

Net number of share options (or share units) granted during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (d)(1)

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- Definition

Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB

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-Topic 718

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-Topic 718

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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

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

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Share Based Awards (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
Share Based Awards (Details Textual) - USD ($)	Aug. 11, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Aug. 31, 2015	Mar. 31, 2015	Oct. 31, 2005
Share Based Awards (Textual) [Abstract]
Outstanding options under 1998 and 2005 plan		1,969,676		1,969,676			1,636,176
Weighted-average grant date fair value per share of stock options				$ 3.36	$ 3.50
Options granted under 2005 plan				564,000
Compensation expense		$ 901,000	$ 867,000	$ 1,585,000	$ 1,657,000
Fair value of options vested				1,735,000	1,524,000
Employee Stock Option [Member]
Share Based Awards (Textual) [Abstract]
Total unrecognized compensation costs		4,420,000		$ 4,420,000
Stock option recognized over weighted average period (in years)				3 years 8 months
Restricted Stock Units Award [Member]
Share Based Awards (Textual) [Abstract]
Number of Shares Outstanding							78,205
Compensation expense		217,000	$ 218,000	$ 415,000	$ 392,000
Total unrecognized compensation costs		$ 1,480,000		$ 1,480,000
Stock option recognized over weighted average period (in years)				1 year 10 months 5 days
Director Options [Member]
Share Based Awards (Textual) [Abstract]
Annualized forfeiture rate for employee options			0.00%		0.00%
2015 Stock Options Plan [Member]
Share Based Awards (Textual) [Abstract]
Common stock reserved						11,500,000
Outstanding options under 1998 and 2005 plan		150,000		150,000
Shares available for future grant		11,289,135		11,289,135
2015 Stock Options Plan [Member] \| Restricted Stock Units Award [Member]
Share Based Awards (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				90,826
Purchase Plan [Member]
Employee Stock Purchase Plan [Abstract]
Shares reserved for future grant	4,000,000	3,925,875		3,925,875
Maximum percentage of gross payroll deduction	15.00%
Purchase price as a percentage of fair market value	90.00%
Maximum shares purchase in a single transaction	1,500
Maximum amount purchased in a calendar year	$ 25,000
Shares issued		74,125		74,125
2005 Stock Options Plan [Member]
Share Based Awards (Textual) [Abstract]
Common stock reserved								4,800,000
Outstanding options under 1998 and 2005 plan		1,819,676		1,819,676
Number of Shares Outstanding		26,279		26,279
2005 Stock Options Plan [Member] \| Restricted Stock Units Award [Member]
Share Based Awards (Textual) [Abstract]
Number of Shares Outstanding		117,105		117,105
Employee Stock Option [Member] \| 2015 Stock Options Plan [Member]
Share Based Awards (Textual) [Abstract]
Expiration period (in years)				10 years
Performance Based Award [Member]
Share Based Awards (Textual) [Abstract]
Compensation expense		$ 112,000	$ 108,000	$ 147,000	$ 211,000
Performance Based Award [Member] \| 2005 Stock Options Plan [Member] \| Executive Officer [Member]
Share Based Awards (Textual) [Abstract]
Common stock reserved		320,000		320,000
Vesting period (in years)				3 years
Performance Based Award [Member] \| 2005 Stock Options Plan [Member] \| New Hires, Promotions and Certain High-performing, Non-executive employees [Member]
Share Based Awards (Textual) [Abstract]
Common stock reserved		400,000		400,000