Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable and Accrued Expenses (Details)

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Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Accounts Payable and Accrued Expenses    
Accounts payable $ 808 $ 3,089
Accrued employee compensation 330 463
Accrued contracted services and other 763 1,117
Accounts payable and accrued expenses $ 1,901 $ 4,669