XML 103 R90.htm IDEA: XBRL DOCUMENT v3.19.1
Selected Quarterly Financial Information (Parenthetical) (Details) - shares
shares in Thousands
3 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]      
Anti-dilutive potential common share equivalents 1,028 1,870 2,373