Employee Benefit Plans (Amounts Recognized in Consolidated Balance Sheets) (Details) - Employee Pension Plans [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Funded Status
Funded status at end of year	$ (33,646)	$ (34,967)
Amounts recognized in Consolidated Balance Sheets consist of:
Current liabilities	(218)	(218)
Long-term liabilities	(33,428)	(34,749)
Net amount recognized in Consolidated Balance Sheets	$ (33,646)	$ (34,967)