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Stock Compensation (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
ESPP, percentage of market price for eligible employees | 85.00% |  |
Actual percentage of target number of shares of common stock granted as Performance Stock Units |  |  | 127.00%
Employees purchased common stock, shares | 38 | 36 |
Capitalized stock compensation expense | $ 57 | $ 36 |
RSAs, RSUs, And PSUs [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Authorized from approved stock incentive plans to certain Company officers, non-employee Directors, and certain eligible employees, shares | 277 | 276 |
Aggregate market value of shares granted under approved stock incentive plans | $ 2,800 | $ 3,000 |
Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Granted, Shares | 384 | 283 |
Unrecognized compensation costs | $ 2,900 |  |
Expected weighted-average period for recognizing the unrecognized compensation costs, in years | 2 years 2 months 12 days |  |
RSAs, RSUs, PSUs, And PSAs [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation costs | $ 6,000 |  |
Restricted Stock Awards (RSAs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected weighted-average period for recognizing the unrecognized compensation costs, in years | 1 year 9 months 18 days |  |
Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected weighted-average period for recognizing the unrecognized compensation costs, in years | 1 year 8 months 12 days |  |
Performance Stock Units (PSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected weighted-average period for recognizing the unrecognized compensation costs, in years | 1 year 6 months |  |
Performance Stock Awards (PSAs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected weighted-average period for recognizing the unrecognized compensation costs, in years | 1 year 4 months 24 days |  |
Minimum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of target number of shares of common stock granted as Performance Stock Units | 60.00% | 60.00% |
Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of target number of shares of common stock granted as Performance Stock Units | 150.00% | 150.00% |

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