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Accounts Payable and Accrued Expenses (Tables)
9 Months Ended
Sep. 30, 2018
Accounts Payable [Abstract]  
Schedule of Accounts Payable and Accrued Expenses Accounts payable and accrued expenses as of September 30, 2018 and December 31, 2017 consists of the following:
(in thousands)
September 30, 2018
 
December 31, 2017
Accounts payable
$
9,693

 
$
8,751

Accrued compensation
14,961

 
6,136

Other accrued expenses
1,960

 
3,716

 
$
26,614

 
$
18,603