Other (Expense) Income, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Income and Expenses [Abstract]
Interest income	$ 21	$ 23	$ 237	$ 419
Other nonoperating income	29	38	108	108
Insurance policy expense	(56)	(119)	(292)	(310)
Other nonoperating expense	(3)	(3)	(8)	(8)
Other (expense) income, net	$ (9)	$ (61)	$ 45	$ 209