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New Accounting Guidance (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
New Accounting Guidance    
ROU assets $ 31,876  
Lease liabilities $ 32,623  
ASU 2016-02 | Reclassification    
New Accounting Guidance    
ROU assets   $ 36,800
Lease liabilities   $ 36,800