Stockholders' Equity Stockholders' Equity (Stock-Based Compensation Plans) (Details) shares in Thousands |
Mar. 31, 2018
shares
|
---|---|
Class of Stock [Line Items] | |
Shares Reserved (in shares) | 1,768 |
Shares Available to Issue (in shares) | 1,230 |
Options Outstanding (in shares) | 1,864 |
Performance Awards Outstanding (in shares) | 532 |
Amended And Restated 2006 Plan [Member] | |
Class of Stock [Line Items] | |
Shares Reserved (in shares) | 0 |
Shares Available to Issue (in shares) | 0 |
Options Outstanding (in shares) | 1,641 |
Performance Awards Outstanding (in shares) | 303 |
2017 Plan [Member] | |
Class of Stock [Line Items] | |
Shares Reserved (in shares) | 1,768 |
Shares Available to Issue (in shares) | 1,230 |
Options Outstanding (in shares) | 223 |
Performance Awards Outstanding (in shares) | 229 |