Income Taxes (Tables)
|3 Months Ended|
Mar. 31, 2018
|Income Taxes [Abstract]|
|Summary Of Tax Credit Carryforwards||
Tabular disclosure of tax credit carryforwards available to reduce future taxable income, including amounts, expiration dates, limitations on use and the related deferred tax assets and valuation allowances.
Reference 1: http://www.xbrl.org/2003/role/presentationRef