Income Taxes (Schedule of Components of Deferred Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Deferred: | |||
| Federal | $ 0 | $ 0 | $ (15,299) |
| State | 0 | 0 | (743) |
| Foreign | 0 | 0 | 0 |
| Income tax expense (benefit) | $ 0 | $ 0 | $ (16,042) |