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Accrued Expenses (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Accrued Expenses [Abstract]    
Vacation $ 331 $ 219
Consulting 218 102
Bonus 194 519
Interest 185 62
Legal and professional fees 172 99
Vendors 126 126
Corporate credit card 119 56
Other 186 223
Total accrued expenses $ 1,531 $ 1,406