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LEASES (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
LEASES      
Options to terminate the leases true    
Operating lease option to terminate Period 30 days    
Fixed operating lease expense $ 1,028 $ 1,016  
Variable operating lease expense 231 39  
Total operating lease expense 1,259 1,055  
Supplemental cash flow information related to the operating leases      
Cash paid for amounts included in the measurement of operating leases 1,001 1,031  
ROU assets obtained in exchange for operating lease obligations 2,710 122  
ROU assets recorded upon adoption of ASC 842   $ 20,344  
Lease assets and liabilities      
Right of use assets $ 18,221   $ 16,420
Right of use assets, Classification us-gaap:OtherAssetsNoncurrent    
Right of use liabilities, current $ 3,734   3,203
Right of use liabilities, current, Classification us-gaap:AccruedLiabilitiesCurrent    
Right of use liabilities, long-term $ 14,684   13,715
Right of use liabilities, long-term, Classification us-gaap:OtherLiabilitiesNoncurrent    
Total ROU lease liabilities $ 18,418   $ 16,918
Weighted average remaining lease term 7 years 8 months 16 days   8 years 3 months 7 days
Weighted average discount rate 2.80%   2.91%
Maturity of the operating lease liabilities      
Remaining 2020 $ 3,078    
2021 3,568    
2022 2,779    
2023 2,425    
2024 2,010    
2025 1,991    
Thereafter 4,333    
Total undiscounted cash flows 20,184    
Less: present value discount (1,766)    
Total lease liabilities $ 18,418   $ 16,918