Stockholders' Equity - Restricted Stock Units (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended	1 Months Ended
	Dec. 31, 2014	Nov. 30, 2013	May 31, 2013	May 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Weighted average remaining contractual term for the restricted stock units outstanding, in years	1 year 3 months 10 days
Aggregate pre-tax intrinsic value of restricted stock units outstanding which includes performance based awards which are subject to milestone attainments	$ 30.3
Common stock, closing price per share	$ 6.52
Aggregate pretax intrinsic value	9.8
Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Nonvested restricted units outstanding	4,642,000
Restricted stock units awarded	3,352,000
Restricted stock units vested	1,279,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Beginning balance	6,105,000
Number of Shares, Awarded	3,352,000
Number of Shares, Vested	(1,279,000)
Number of Shares, Cancelled	(3,536,000)
Number of Shares, Ending balance	4,642,000
Restricted Stock Units (RSUs) | Officer
Class of Stock [Line Items]
Restricted stock units awarded		500,000
Restricted stock units vested		200,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Awarded		500,000
Number of Shares, Vested		(200,000)
Performance Based RSU | Officer
Class of Stock [Line Items]
Nonvested restricted units outstanding	300,000
Grants in period, fair value		3.3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Ending balance	300,000
Performance-Based MSU
Class of Stock [Line Items]
Grants in period, fair value		4.5
Performance-Based MSU | Minimum
Class of Stock [Line Items]
Award vesting percentage		0.00%
Performance-Based MSU | Maximum
Class of Stock [Line Items]
Award vesting percentage		150.00%
Performance-Based MSU | First Vesting Period
Class of Stock [Line Items]
Award performance period			2 years
Performance-Based MSU | Second Vesting Period
Class of Stock [Line Items]
Award performance period			3 years
1992 Plan | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Vesting period, in years	4 years
Vested in first period of employment	0
Award vesting period, quarters	12
2011 Equity Incentive Plan | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Vesting period, in years	4 years
Vested in first period of employment	0
Award vesting period, quarters	12
FY2015 Short Term Plan | Minimum
Class of Stock [Line Items]
Award pay out percentage				50.00%
FY2015 Short Term Plan | Maximum
Class of Stock [Line Items]
Award pay out percentage				150.00%