|
Description of Business and Summary of Significant Accounting Policies - Summary of Cumulative Catch-Up Adjustments (Details) (Contracts Accounted for under Percentage of Completion, USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Concentration Risk [Line Items] | |||
| Favorable adjustments | $ 3,981 | $ 42,206 | $ 11,896 |
| Unfavorable adjustments | (6,629) | (3,906) | (1,065) |
| Net (unfavorable) favorable adjustments | (2,648) | 38,300 | 10,831 |
| Tethered Aerostat Radar System | |||
| Concentration Risk [Line Items] | |||
| Unfavorable adjustments | $ (2,500) | ||