Organization And Accounting Policies (Tables)
|6 Months Ended|
Jun. 30, 2018
|Organization And Accounting Policies [Abstract]|
|Rollforward Analysis of the Allowance Against Accounts Receivable Balance||
Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account.
Reference 1: http://www.xbrl.org/2003/role/presentationRef