Income Taxes (Tables)
|12 Months Ended|
Dec. 31, 2017
|Income Taxes [Abstract]|
|Schedule Of Deferred Tax Assets And Valuation Allowance||
Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.
Reference 1: http://www.xbrl.org/2003/role/presentationRef