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Commitments and Contingencies (Narrative) (Details) - Breach of Contract - Maximum
1 Months Ended
Jul. 31, 2017
USD ($)
Loss Contingencies [Line Items]  
Litigation settlement, amount awarded $ 250,000
Litigation settlement, amount awarded, per individual $ 2,500
Litigation settlement, amount awarded, period of extended protection (in years) 1 year
Litigation settlement, amount awarded, period of protection 3 years
Litigation settlement, expense $ 245,000