Other (Expense) Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Income and Expenses [Abstract]
Interest (expense) income	$ (9)	$ 12	$ 288	$ 216
Other nonoperating income	69	44	130	79
Insurance policy expense	(23)	(124)	(129)	(236)
Other nonoperating expense	(2)	(2)	(5)	(5)
Other income (expense), net	$ 35	$ (70)	$ 284	$ 54