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Reserve for Severance Reserve balance (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Accrued severance included in:    
Accrued expenses and other liabilities $ 2,762 $ 3,467
Noncurrent other 179 950
Total accrued severance $ 2,941 $ 4,417