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Fair Value of Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2017
Fair Value Disclosures [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis
The tables below present information about the Company’s assets and liabilities measured at fair value on a recurring basis:
 
December 31, 2017
(in thousands)
Total Fair
Value
 
Level 1
 
Level 2
 
Level 3
Money market
$
8,700

 
$
8,700

 
$
—

 
$
—

Total
$
8,700

 
$
8,700

 
$
—

 
$
—

 
December 31, 2016
(in thousands)
Total Fair
Value
 
Level 1
 
Level 2
 
Level 3
Money market
$
3,565

 
$
3,565

 
$
—

 
$
—

Total
$
3,565

 
$
3,565

 
$
—

 
$
—