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Research Grants And Agreements (Details)
$ in Thousands
3 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Research and Development Arrangement, Contract to Perform for Others [Line Items]                      
Number of additional grants | item                   0  
Research and development expense $ 1,806 $ 1,739 $ 1,453 $ 990 $ 951 $ 659 $ 547 $ 421 $ 26 $ 5,988 $ 2,578
BEM [Member]                      
Research and Development Arrangement, Contract to Perform for Others [Line Items]                      
Research grant funding                 $ 200   300
ODURF [Member]                      
Research and Development Arrangement, Contract to Perform for Others [Line Items]                      
Period of time for Sponsored Research Agreement ("SRA")                   12 months  
ODURF [Member] | Sponsored Research Agreement ("SRA") [Member]                      
Research and Development Arrangement, Contract to Perform for Others [Line Items]                      
Research and development expense                   $ 1,000 1,200
Incurred costs pursuant to various task orders                   $ 900 $ 1,000