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Restricted Cash (Tables)
12 Months Ended
Dec. 31, 2018
Restricted Cash [Abstract]  
Schedule of Restricted Cash

(in thousands)

 

December 31, 2018

 

 

December 31, 2017

 

Cash and cash equivalents

 

$

2,516

 

 

$

3,999

 

Convertible Notes

 

 

 

 

 

238

 

Letters of credit

 

 

1,012

 

 

 

1,012

 

Security for credit cards

 

 

50

 

 

 

75

 

Total cash, cash equivalents and restricted cash shown

   in the statement of cash flows

 

$

3,578

 

 

$

5,324