Loss on Long-Term Contract (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2016 |
|
| Loss On Longterm Contract [Abstract] | ||||
| Net Gain Loss on the long-term contract | $ 1,480 | $ 444 | $ (6,200) | |
| Remaining balance on the loss on long-term contract | $ 267 | |||