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Share-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Restricted Shares

A summary of the Company's restricted stock units granted under the Plan is presented below:

Restricted Stock Units		Shares (in thousands)			Weighted- Average Grant-Date Fair Value
Six months ended September 30, 2015
Vested and nonvested at March 31, 2015		362.3			$	22.74
Granted		259.5			42.20
Vested and issued		(153.6	)		18.16
Forfeited		(1.4	)		33.50
Vested and nonvested at September 30, 2015		466.8			35.03
Vested at September 30, 2015		69.8			14.76
Six months ended September 30, 2016
Vested and nonvested at March 31, 2016		467.8			$	35.22
Granted		65.8			55.65
Vested and issued		(92.7	)		28.47
Forfeited		(91.0	)		41.69
Vested and nonvested at September 30, 2016		349.9			39.16
Vested at September 30, 2016		63.4			20.12

Fair Value of Options Granted

		Six months ended September 30,
		2016				2015
Expected volatility		37.8		%		40.2		%
Expected dividends		$	—			$	—
Expected term in years		6.0				6.0
Risk-free rate		1.7		%		1.7		%

Stock Option Activity

A summary of option activity under the Plan is as follows:

Options		Shares (in thousands)			Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Term (years)		Aggregate Intrinsic Value (in thousands)
Six months ended September 30, 2015
Outstanding at March 31, 2015		871.2			$	23.40
Granted		200.1			41.80
Exercised		(336.9	)		18.99
Forfeited or expired		(2.1	)		38.16
Outstanding at September 30, 2015		732.3			30.42				8.1		$	10,816
Exercisable at September 30, 2015		319.5			21.91				7.0		$	7,430
Six months ended September 30, 2016
Outstanding at March 31, 2016		727.7			$	30.70
Granted		250.6			56.17
Exercised		(107.1	)		31.97
Forfeited or expired		(90.7	)		42.56
Outstanding at September 30, 2016		780.5			37.33				7.5		$	10,326
Exercisable at September 30, 2016		383.7			25.61				6.5		$	8,693

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

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

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ 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 (f)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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