Accrued Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Accrued legal and professional fees	$ 252	$ 889
General and Administrative Expense
Professional fees paid	3,985	3,475
Cash compensation subject to fulfillment	2,160	3,650
Bonus fees paid	8,000	$ 800
General and Administrative Expense \| Directors and officers
Cash compensation subject to fulfillment	$ 2,160

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of commitment made to pay deferred cash remuneration.

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Amount of distribution made to individual in accordance with deferred compensation arrangement.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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-SubTopic 220
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