Income Taxes Income Taxes (Unrecognized Tax Benefits) (Details) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 8,333	$ 14,089
Additions based on current year tax positions	212	286
Reductions as a result of the lapse of statute limitations	(1,775)	(6,042)
Balance at end of year	$ 6,770	$ 8,333