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Accrued Liabilities
9 Months Ended
Sep. 30, 2019
Payables And Accruals [Abstract]  
Accrued Liabilities

Note 4. Accrued Liabilities

Accrued liabilities at September 30, 2019 and December 31, 2018, consisted of the following (in thousands):

 

 

 

September 30, 2019

 

 

December 31, 2018

 

Accrued compensation and related costs

 

$

9,082

 

 

$

10,765

 

Accrued professional services

 

 

4,337

 

 

 

4,544

 

Accrued development costs

 

 

1,804

 

 

 

1,965

 

Other accrued expenses

 

 

3,226

 

 

 

2,526

 

Total accrued liabilities

 

$

18,449

 

 

$

19,800