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Restructuring Charges (Tables)
12 Months Ended
Dec. 31, 2013
Restructuring Charges [Abstract]  
Schedule of restructuring and related costs
Accrued severance expense at December 31, 2013 of $1.6 million is included in current accrued expenses and $0.4 million is included in long-term accrued expenses on the Consolidated Balance Sheets, for a total accrued severance expense of $2.0 million at December 31, 2013.

(in thousands)
 
December 31, 2013
 
Severance and restructuring expenses
 
$
3,974
 
Restructuring expenses paid by December 31, 2013
  
(1,955
)
Total restructuring expenses accrued as of December 31, 2013
 
$
2,019