Represents the period from grant date after which awards begin to vest.

No definition available.

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- Definition

Represents the percentage of options earned depending on the outcome of performance goals.

+ References

No definition available.

+ Details

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- Definition

The period from grant date until the time at which the share-based (option) award expires.

+ References

No definition available.

+ Details

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- Definition

The period of time which gives the recipient the right to receive common stock that is contingent upon achievement of specified pre-established performance goals over the performance period.

+ References

No definition available.

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- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent commencing one year after the date of grant, on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, shown as a percentage.

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

Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef
-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

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

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

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Share-based compensation (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Share-based compensation
Share-based compensation expense	$ 3,086,000	$ 3,282,000	$ 10,427,000	$ 11,515,000
Employee Stock Option
Share-based compensation
Vesting period (in years)			4 years
Percentage of shares that vest after one year from the date of grant			25.00%
Period from grant date after which awards begin to vest (in years)			1 year
Term of options (in years)			10 years
Granted (in shares)			0.1
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			$ 6.56
Share-based compensation expense	600,000	1,900,000	$ 3,100,000	5,900,000
Performance Stock Options
Share-based compensation
Share-based compensation expense	200,000	200,000	$ 500,000	500,000
Performance period (in years)			3 years
Performance Stock Units PSUs
Share-based compensation
Performance period (in years)			2 years
Performance Stock Units PSUs \| Minimum
Share-based compensation
Percentage of options earned depending on outcome of performance goals			0.00%
Performance Stock Units PSUs \| Maximum
Share-based compensation
Percentage of options earned depending on outcome of performance goals			200.00%
Performance Shares
Share-based compensation
Granted (in shares)			0.3
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			$ 12.63
Share-based compensation expense	619,000	17,000	$ 2,054,000	1,014,000
Restricted Stock Units
Share-based compensation
Share-based compensation expense	$ 1,700,000	$ 1,500,000	$ 4,700,000	$ 4,100,000
Grants in period			0.5
Grants in period, weighted average grant date fair value			$ 12.63
Restricted Stock Units \| Minimum
Share-based compensation
Vesting period (in years)			1 year
Restricted Stock Units \| Maximum
Share-based compensation
Vesting period (in years)			3 years