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Discontinued Operation (Tables)
 9 Months Ended
Sep. 30, 2012
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Operating Results of Company's Former Commercial Business
The following table summarizes liabilities for exit costs related to the discontinued operation, included in "Accrued liabilities" and "Other long-term liabilities" in the Company's condensed consolidated balance sheets (in thousands):

 
Severance and Benefits
 
Facilities
Leases
 
Total
Liabilities
Balance as of December 31, 2011
$
175

 
$
1,929

 
$
2,104

Adjustments
—

 
(390
)
 
(390
)
Payments
(175
)
 
(343
)
 
(518
)
Balance as of September 30, 2012
$
—

 
$
1,196

 
$
1,196

Following is a summary of the operating results of the Company's former Commercial business for the three and nine months ended September 30, 2012 and 2011 (in thousands):
 
 
Three months ended September 30,
 
Nine months ended September 30,
 
2012
 
2011
 
2012
 
2011
Revenue
$
—

 
$
—

 
$
—

 
$
84

Operating loss
$
(290
)
 
$
(313
)
 
$
(223
)
 
$
(1,430
)
Disposal gain
9

 
294

 
56

 
921

Income tax benefit (expense)
16

 
(354
)
 
99

 
(451
)
Total loss from discontinued operation
$
(265
)
 
$
(373
)
 
$
(68
)
 
$
(960
)