Stock-Based Compensation (Tables)

3 Months Ended

Jun. 30, 2013

Fair market value of stock-based compensation awards

The fair market value of stock-based compensation awards granted during the three months ended June 30, 2013 and 2012 were as follows:

	Three months ended June 30,
	2013				2012
			Fair Value				Fair Value
	Shares		Per Award		Shares		Per Award
Stock options		0.2	$	7.76		0.2	$	4.23
Restricted stock - retention		0.3	$	10.40		0.4	$	5.75
Restricted stock - performance based		0.2	$	10.40		0.4	$	5.75

Assumptions used in determining fair value of options

The following assumptions were used in determining fair value for stock options:

	Three months ended June 30,
	2013			2012
Expected life of awards in years		6.3			6.3
Risk-free interest rate		1.3	%		0.9	%
Expected volatility of the Company's stock		88.7	%		87.4	%
Expected dividend yield on the Company's stock		0.0	%		0.0	%

Unrecognized compensation cost related to the non-vested stock-based compensation awards

As of June 30, 2013, the total remaining unrecognized compensation cost related to non-vested stock-based compensation awards, which will be amortized over the weighted average remaining service periods, was as follows:

	Unrecognized Compensation Cost		Weighted Average Remaining Service Period in Years
Stock options	$	2.1		3.0
Restricted stock - retention		5.2		3.3
Restricted stock - performance based		3.1		2.5
Total	$	10.4		3.0