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9. Other Income and Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Interest and investment income $ (7,100) $ (8,500) $ (8,000) $ (9,200)
Net realized gain on investments 0 0 (300) 0
Miscellaneous other expense (income) items, net 0 100 0 200
Other (income) expense, net $ 7,107 $ 8,388 $ 8,260 $ 9,049