Annual report pursuant to Section 13 and 15(d)

401 (K) Savings Plan (Details)

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401 (K) Savings Plan (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]      
Employer matching contributions $ 269 $ 306 $ 289
Maximum
     
Defined Benefit Plan Disclosure [Line Items]      
Maximum employee contribution, percentage 100.00%