Other Income (Expense), Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other Income and Expenses [Abstract]
Interest income	$ 187	$ 113
Other nonoperating income	0	3
Insurance policy expense	(144)	(164)
Other Nonoperating Expense	(2)	0
Other income (expense), net	$ 41	$ (48)