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Reserves For Claims Summary Of Transactions In Reserves For Claims (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]      
Liability for Title Claims and Claims Adjustment Expense $ 33,038 $ 31,729 $ 34,801
Provision (benefit), charged to operations 2,623 (332)  
Payments of claims, net of recoveries $ (1,314) $ (2,740)