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Restricted Cash (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Restricted Cash    
Restricted cash $ 825us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue  
Long-term restricted cash   $ 825us-gaap_RestrictedCashAndCashEquivalentsNoncurrent