|
Business Segments and Customer Information, Revenue by Customer (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
|
Jun. 30, 2012
|
|
| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | $ 119,062 | $ 135,671 | $ 238,219 | $ 275,658 |
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U.S. Army/Army Reserve [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 28,161 | 39,574 | 59,754 | 84,807 |
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U.S. Navy [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 27,745 | 33,087 | 53,149 | 63,040 |
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U.S. Air Force [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 3,228 | 3,682 | 6,407 | 7,290 |
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Total Department of Defense [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 59,134 | 76,343 | 119,310 | 155,137 |
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U.S. Postal Service [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 34,446 | 33,317 | 68,828 | 67,624 |
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Department of Treasury [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 9,302 | 7,517 | 18,811 | 16,143 |
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Department of Interior [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 2,809 | 4,514 | 5,544 | 9,205 |
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Department of Energy [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 5,214 | 5,312 | 10,106 | 10,552 |
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Other government [Member]
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 7,577 | 7,921 | 14,466 | 15,393 |
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Total Federal civilian agencies [Member]
|
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | 59,348 | 58,581 | 117,755 | 118,917 |
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Commercial [Member]
|
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| Revenue, Major Customer [Line Items] | ||||
| Revenue, by customer | $ 580 | $ 747 | $ 1,154 | $ 1,604 |