XML 56 R45.htm IDEA: XBRL DOCUMENT v3.10.0.1
8. Other Income and Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Interest and investment income $ (2,600) $ (1,400) $ (20,900) $ (14,500)
Net realized loss (gain) on investments 100 (200) 300 (300)
Gain on sale of land 0 0 (4,100) 0
Gain on divestiture of a product line 0 0 (5,100) 0
Other Nonoperating Income (100)      
Other Nonoperating Expense   500 200 1,300
Nonoperating Income (Expense) $ (2,585) $ (1,061) $ (29,588) $ (13,486)