Income Taxes (Schedule of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Balance at beginning of period	$ 1,526	$ 1,369	$ 1,701
Changes in tax positions of prior years	912	84	(29)
Additions based on tax positions related to the current year	866	603	676
Payments	(85)	0	(126)
Closure of tax years	(365)	(530)	(853)
Balance at end of period	$ 2,854	$ 1,526	$ 1,369