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Leases (Tables)
12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Schedule of Future Minimum Rental Payments Required under Operating Leases Following is a schedule of future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2018:

Year Ending December 31,

 

Amount

 

 

 

(In thousands)

 

2019

 

$

216

 

2020

 

 

224

 

2021

 

 

233

 

2022

 

 

200

 

 

 

$

873