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Leases Assets and Liabilities Related to Leases (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Jan. 01, 2019
ASSETS    
Operating lease assets $ 32,175 $ 35,508
Finance lease assets 10,816  
Total lease assets 42,991  
Current    
Operating 6,725  
Finance 631  
Noncurrent    
Operating 25,486  
Finance 8,483  
Total lease liabilities $ 41,325  
Weighted average remaining lease term    
Operating leases 5 years 11 months  
Finance leases 11 years 4 months 29 days  
Weighted average discount rate    
Operating leases 5.20%  
Finance leases 4.70%