Other Income and Other Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other income:
Interest income	$ 251	$ 76
Miscellaneous	2,116	682
Total other income	2,367	758
Other expense:
Non-operating costs	(2,372)	(1,932)
Investment losses - net	(140)	(112)
Miscellaneous	(2,172)	(1,708)
Total other expense	$ (4,684)	$ (3,752)