Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits, beginning balance	$ 535	$ 677	$ 724
Additions based on tax positions related to the current year	0	0	0
Additions based on tax positions related to the prior years	0	0	0
Decreases based on payments made during the year	0	0	0
Decreases based on tax positions related to the prior years	(38)	(142)	(47)
Unrecognized tax benefits, ending balance	497	535	677
Reconciliation of Unrecognized Tax Benefits, Accrued Interest [Roll Forward]
Accrued interest, beginning balance	202	220	260
Additions based on tax positions related to the current year	0	0	0
Additions based on tax positions related to the prior years	11	24	33
Decreases based on payments made during the year	0	0	0
Decreases based on tax positions related to the prior years	(59)	(42)	(73)
Accrued interest, ending balance	$ 154	$ 202	$ 220