Benefit Plans (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected Long-Term Return	7.00%	7.00%
Target Allocation	100%
Defined Benefit Plan Weighted Average Asset Allocations	100.00%	100.00%
Estimated Future Benefit Payments
Expected company contributions in the following fiscal year	$ 0
Expected Benefit Payments:
In the first year following the disclosure date	116
In the second year following the disclosure date	116
In the third year following the disclosure date	85
In the fourth year following the disclosure date	144
In the fifth year following the disclosure date	165
In the sixth year following the disclosure date	$ 825
Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected Long-Term Return	8.50%
Target Allocation	55%
Defined Benefit Plan Weighted Average Asset Allocations	87.00%	82.00%
Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected Long-Term Return	5.50%
Target Allocation	45%
Defined Benefit Plan Weighted Average Asset Allocations	13.00%	18.00%