Accounts Payable and Accrued Expenses
|12 Months Ended|
Dec. 31, 2018
|Payables and Accruals [Abstract]|
|Accounts Payable and Accrued Expenses||
6. Accounts Payable and Accrued Expenses
Accounts payable and accrued expenses consisted of the following as of December 31, (in thousands):
Accounts payable and accrued other expenses contain unpaid general and administrative expenses and costs related to research and development that have been billed and estimated unbilled, respectively, as of year-end.
The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef