Employee Benefit Plans (Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future benefit payments, 2014	$ 3,280
Estimated future benefit payments, 2015	1,149
Estimated future benefit payments, 2016	1,158
Estimated future benefit payments, 2017	874
Estimated future benefit payments, 2018	925
Estimated future benefit payments, 2019-2023	4,120
Total	11,506
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future benefit payments, 2014	21
Estimated future benefit payments, 2015	22
Estimated future benefit payments, 2016	22
Estimated future benefit payments, 2017	22
Estimated future benefit payments, 2018	12
Estimated future benefit payments, 2019-2023	50
Total	$ 149