Business Segments and Customer Information (Details) (USD $) In Thousands, unless otherwise specified
|
12 Months Ended |
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Segment Reporting Information [Line Items] |
|
|
|
Number of reportable operating segments |
4
|
|
|
Revenues |
$ 546,755
|
$ 580,762
|
$ 810,955
|
Income before income taxes |
43,852
|
32,392
|
37,741
|
Interest (income) expense, net |
7,224
|
3,685
|
199
|
Depreciation and amortization expense |
19,795
|
13,467
|
7,589
|
Capital expenditures |
20,863
|
6,635
|
4,805
|
Total assets |
410,211
|
454,512
|
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
546,755
|
580,762
|
810,955
|
Percentage of revenue by customer (in dollars per share) |
10000.00%
|
10000.00%
|
10000.00%
|
U.S. Army/Army Reserve [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
182,412
|
231,615
|
463,378
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
182,412
|
231,615
|
463,378
|
Percentage of revenue by customer (in dollars per share) |
3340.00%
|
3990.00%
|
5710.00%
|
U.S. Navy [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
120,867
|
140,551
|
198,833
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
120,867
|
140,551
|
198,833
|
Percentage of revenue by customer (in dollars per share) |
2210.00%
|
2420.00%
|
2450.00%
|
U.S. Air Force [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
6,963
|
11,971
|
13,304
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
6,963
|
11,971
|
13,304
|
Percentage of revenue by customer (in dollars per share) |
130.00%
|
200.00%
|
170.00%
|
Total Department of Defense [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
310,242
|
384,137
|
675,515
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
310,242
|
384,137
|
675,515
|
Percentage of revenue by customer (in dollars per share) |
5680.00%
|
6610.00%
|
8330.00%
|
U.S. Postal Service [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
130,866
|
75,964
|
0
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
130,866
|
75,964
|
0
|
Percentage of revenue by customer (in dollars per share) |
2390.00%
|
1310.00%
|
0.00%
|
Department of U.S. Treasury [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
33,369
|
41,434
|
49,332
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
33,369
|
41,434
|
49,332
|
Percentage of revenue by customer (in dollars per share) |
610.00%
|
710.00%
|
610.00%
|
Department of Interior [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
16,884
|
24,254
|
29,810
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
16,884
|
24,254
|
29,810
|
Percentage of revenue by customer (in dollars per share) |
310.00%
|
420.00%
|
370.00%
|
Department of Energy [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
20,898
|
23,010
|
21,717
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
20,898
|
23,010
|
21,717
|
Percentage of revenue by customer (in dollars per share) |
380.00%
|
400.00%
|
270.00%
|
Other government [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
32,231
|
28,160
|
29,598
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
32,231
|
28,160
|
29,598
|
Percentage of revenue by customer (in dollars per share) |
590.00%
|
480.00%
|
360.00%
|
Total Federal civilian agencies [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
234,248
|
192,822
|
130,457
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
234,248
|
192,822
|
130,457
|
Percentage of revenue by customer (in dollars per share) |
4280.00%
|
3320.00%
|
1610.00%
|
Commercial [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
2,265
|
3,803
|
4,983
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
2,265
|
3,803
|
4,983
|
Percentage of revenue by customer (in dollars per share) |
40.00%
|
70.00%
|
60.00%
|
Federal Group [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
140,424
|
184,147
|
454,660
|
Income before income taxes |
10,130
|
6,099
|
20,574
|
Interest (income) expense, net |
291
|
(75)
|
(31)
|
Depreciation and amortization expense |
3,093
|
2,906
|
4,115
|
Capital expenditures |
763
|
547
|
496
|
Total assets |
30,130
|
29,653
|
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
140,424
|
184,147
|
454,660
|
International Group [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
167,193
|
206,746
|
261,499
|
Income before income taxes |
5,604
|
5,342
|
9,376
|
Interest (income) expense, net |
448
|
(21)
|
197
|
Depreciation and amortization expense |
3,035
|
1,903
|
1,521
|
Capital expenditures |
83
|
573
|
816
|
Total assets |
31,485
|
49,734
|
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
167,193
|
206,746
|
261,499
|
IT, Energy and Management Consulting Group [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
94,225
|
106,817
|
94,796
|
Income before income taxes |
11,802
|
12,440
|
10,275
|
Interest (income) expense, net |
14
|
(73)
|
(49)
|
Depreciation and amortization expense |
3,753
|
3,256
|
1,953
|
Capital expenditures |
53
|
236
|
305
|
Total assets |
64,502
|
70,108
|
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
94,225
|
106,817
|
94,796
|
Infrastructure Group [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Total assets |
0
|
27,372
|
|
Supply Chain Management Group [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Revenues |
144,913
|
83,052
|
0
|
Income before income taxes |
23,282
|
15,965
|
0
|
Interest (income) expense, net |
729
|
350
|
0
|
Depreciation and amortization expense |
9,914
|
5,402
|
0
|
Capital expenditures |
341
|
113
|
0
|
Total assets |
193,214
|
203,241
|
|
Revenue, Major Customer [Line Items] |
|
|
|
Revenue, by customer |
144,913
|
83,052
|
0
|
Corporate/unallocated [Member]
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
Income before income taxes |
(6,966)
|
(7,454)
|
(2,484)
|
Interest (income) expense, net |
5,742
|
3,504
|
82
|
Capital expenditures |
19,623
|
5,166
|
3,188
|
Total assets |
$ 90,880
|
$ 74,404
|
|