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Stock-Based Compensation (Tables)
12 Months Ended
Mar. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Stock Option Activity under All Plans and Other Grants

 

The following table summarizes stock option activity under all plans:

 

 

 

Number
Of Shares

 

 

Aggregate
Intrinsic
Value

 

 

Approximate
Remaining
Contractual
Term (Years)

 

 

Weighted-
Average
Exercise
Price

 

Outstanding at March 31, 2012

 

 

759,577

  

 

$

800

  

 

 

7

  

 

$

8.17

  

Granted

 

 

551,000

  

 

 

  

 

 

10

  

 

$

8.07

  

Exercised

 

 

(46,411

 

$

35

  

 

 

  

 

$

6.07

  

Canceled or expired

 

 

(32,668

 

 

  

 

 

  

 

$

8.51

  

Outstanding at March 31, 2013

 

 

1,231,498

  

 

$

720

  

 

 

7

  

 

$

8.20

  

Granted

 

 

158,000

  

 

 

  

 

 

10

  

 

$

8.58

  

Exercised

 

 

(130,548

 

$

253

  

 

 

  

 

$

6.98

  

Canceled or expired

 

 

(407,785

 

 

  

 

 

  

 

$

8.84

  

Outstanding at March 31, 2014

 

 

851,165

  

 

$

1,516

  

 

 

8

  

 

$

8.15

  

Granted

 

 

440,000

  

 

 

  

 

 

10

  

 

$

11.45

  

Exercised

 

 

(88,833

 

$

339

  

 

 

  

 

$

7.46

  

Canceled or expired

 

 

(46,333

 

 

  

 

 

  

 

$

8.20

  

Outstanding at March 31, 2015

 

 

1,155,999

  

 

$

1,480

  

 

 

8

  

 

$

9.26

  

Options exercisable at March 31, 2015

 

 

597,000

  

 

$

1,143

  

 

 

7

  

 

$

8.60

  

Unvested options expected to become exercisable after March 31, 2015

 

 

558,999

  

 

$

391

  

 

 

9

  

 

$

10.23

  

Shares available for future option grants at March 31, 2015 (a)

 

 

281,376

  

 

 

 

 

 

 

 

 

 

 

 

 

(a)

May be decreased by restricted stock grants.

Restricted Stock Award Activity under All Plans

A summary of restricted stock award activity under all plans is as follows:

 

 

  

Number of
Shares

 

 

Weighted –
Average Grant
Date
Fair Value

 

Non-vested at March 31, 2012

  

 

21,094

 

 

$

8.54

  

Granted

  

 

23,934

 

 

$

7.52

  

Vested

  

 

(20,903

 

$

8.56

  

Cancelled

  

 

  

 

$

  

Non-vested at March 31, 2013

  

 

24,125

 

 

$

7.51

  

Granted

  

 

31,196

 

 

$

8.91

  

Vested

  

 

(24,125

 

$

7.51

  

Cancelled

  

 

(1,389

 

$

8.35

  

Non-vested at March 31, 2014

  

 

29,807

 

 

$

8.93

  

Granted

  

 

27,930

 

 

$

10.07

  

Vested

  

 

(22,924

 

$

9.11

  

Cancelled

  

 

(4,649

 

$

9.24

  

Non-vested at March 31, 2015

  

 

30,164

 

 

$

8.81

  

 

Black Scholes Based Option Pricing Model  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Assumptions to Estimate Fair Value of Option Grants

The Company used the following assumptions to estimate the fair value of option grants under the Black-Scholes method:

 

 

  

Dividend
yield

 

 

Volatility

 

 

Risk-free
interest
rate

 

 

Expected
term of
options (in
years)

 

  

Forfeiture
adjustment

 

2015 $4.61 value per option

  

 

0.0

 

 

30.0

 

 

2.1

 

 

7.0

  

  

 

0.0

2015 $3.85 value per option

  

 

0.0

 

 

30.9

 

 

2.2

 

 

7.0

  

  

 

0.0

2015 $3.72 value per option

  

 

0.0

 

 

30.9

 

 

2.2

 

 

7.0

  

  

 

0.0

2014 $3.03 value per option

  

 

0.0

 

 

31.2

 

 

1.3

 

 

7.0

  

  

 

0.0

2014 $3.01 value per option

  

 

0.0

 

 

31.2

 

 

1.3

 

 

7.0

  

  

 

0.0

2013 $3.05 value per option

  

 

0.0

 

 

34.0

 

 

1.2

 

 

7.0

  

  

 

0.0

2013 $3.02 value per option

  

 

0.0

 

 

35.5

 

 

1.2

 

 

7.0

  

  

 

0.0

2013 $3.02 value per option

  

 

0.0

 

 

34.9

 

 

1.1

 

 

7.0

  

  

 

0.0

2013 $2.82 value per option

  

 

0.0

 

 

30.9

 

 

1.3

 

 

7.0

  

  

 

0.0

 

Monte Carlo Simulation  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Assumptions to Estimate Fair Value of Option Grants

The Company used the following assumptions to estimate the fair value of option grants under the Monte Carlo simulation:

 

 

  

2015

$3.05

value per
option

 

 

2015

$2.49

value per
option

 

 

2015

$2.49

value per
option

 

 

2014
$1.90
value per
option

 

 

2014
$1.71
value per
option

 

 

2013
$1.86
value per
option

 

 

2013
$1.75
value per
option

 

 

2013
$1.75
value per
option

 

Dividend yield

  

0.0

%

 

0.0

%

 

0.0

%

 

 

0.0

%

 

 

0.0

%

 

 

0.0

%

 

 

0.0

%

 

 

0.0

Volatility

  

32.3

%

 

33.7

%

 

33.7

%

 

 

34.9

%

 

 

34.9

%

 

 

34.0

%

 

 

34.9

%

 

 

30.1

Risk-free interest rate

  

2.6

%

 

2.5

%

 

2.5

%

 

 

1.9

%

 

 

1.9

%

 

 

1.8

%

 

 

1.1

%

 

 

1.3

Expected term of options (in years)

  

10.0

  

 

10.0

  

 

10.0

  

 

 

10.0

  

 

 

10.0

  

 

 

10.0

  

 

 

10.0

  

 

 

10.0

  

Forfeiture adjustment

  

1.4

%

 

1.2

%

 

1.2

%

 

 

1.1

%

 

 

1.8

%

 

 

0.2

%

 

 

0.2

%

 

 

0.2

Suboptimal behavior factor

  

1.6

  

 

1.6

  

 

1.6

  

 

 

1.7

  

 

 

1.7

  

 

 

1.9

  

 

 

1.9

  

 

 

1.9