Quarterly Financial Information (Tables)
|12 Months Ended|
Dec. 31, 2018
|Selected Quarterly Financial Information [Abstract]|
|Schedule of Quarterly Financial Information||A summary of our unaudited quarterly financial information for 2018 and 2017 is provided below.
Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef