XML 78 R65.htm IDEA: XBRL DOCUMENT v3.19.1
Equity Investees (Schedule of Operations for Equity Investees) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
INCOME STATEMENT DATA:    
Revenues $ 31,052 $ 28,944
Operating income 22,305 20,347
Net income $ 19,850 $ 18,578