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Accrued Liabilities (Tables)
9 Months Ended
Sep. 30, 2019
Payables And Accruals [Abstract]  
Summary of Accrued Liabilities

Accrued liabilities consist of the following:

 

 

 

September 30,

2019

 

 

December 31,

2018

 

 

 

(In thousands)

 

Accrued payroll and related expenses

 

$

1,533

 

 

$

1,189

 

Accrued research and development expenses

 

 

514

 

 

 

1,028

 

Other

 

 

173

 

 

 

510

 

Total accrued liabilities

 

$

2,220

 

 

$

2,727