XML 64 R50.htm IDEA: XBRL DOCUMENT v3.19.1
LEASE COMMITMENTS - Future Minimum Lease Payments and Rent Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Future minimum payments under operating leases      
2019 $ 1,072    
2020 1,072    
2021 1,072    
2022 1,072    
2023 1,072    
Total minimum lease payments 5,360    
Operating lease expense      
Rental expense for operating leases $ 1,700 $ 1,600 $ 1,500