Employee Benefit Plans (Summary of Expense Relating to Various Employee Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee benefit plans expense	$ 171	$ 403	$ 842
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee benefit plans expense	(414)	(162)	252
401(k) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee benefit plans expense	$ 585	$ 565	$ 590