Annual report pursuant to Section 13 and 15(d)

Accounts Payable and Accrued Expenses (Details)

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Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Accounts payable $ 3,089 $ 1,545
Accrued employee compensation 463 215
Accrued contracted services and other 1,117 977
Accounts payable and accrued expenses $ 4,669 $ 2,737