Other Income, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Abstract]
Interest income	$ 129	$ 246	$ 663
Other nonoperating income	11	183	9
Insurance Policy Expense (Income), Net	(40)	(488)	(532)
Other Nonoperating Expense	(106)	0	0
Other (expense) income, net	$ (6)	$ (59)	$ 140