9. Other Income and Expenses (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest and investment income	$ (800,000)	$ (1,100,000)	$ (10,000,000)	$ (10,200,000)
Net realized losses on investments	0	500,000	0	200,000
Miscellaneous other expense (income) items, net	200,000	(100,000)	300,000	(700,000)
Other (income) expense, net	$ 613,000	$ 667,000	$ 9,662,000	$ 10,711,000