XML 52 R37.htm IDEA: XBRL DOCUMENT v3.19.1
Commitments (Tables)
12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Future Minimum Lease Payments Future minimum lease payments under non-cancelable operating leases are as follows (in thousands):
 
 Commitments
  
2019 $573 
2020 611 
2021 633 
2022 610 
2023 607 
2024 200 
 $3,234