Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Other Current Assets) (Details)

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Basis of Presentation (Other Current Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Summary of other current assets    
Prepaid expenses $ 896us-gaap_PrepaidExpenseCurrent $ 835us-gaap_PrepaidExpenseCurrent
Other receivables 30us-gaap_AccountsAndOtherReceivablesNetCurrent 685us-gaap_AccountsAndOtherReceivablesNetCurrent
Total current assets $ 926us-gaap_OtherAssetsCurrent $ 1,520us-gaap_OtherAssetsCurrent