Employee Benefit Plans (Schedule of Allocation of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 66,757		$ 59,559
Mutual Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	66,675	[1]	59,485	[2]
U.S. Equity Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	32.00%		33.00%
U.S. Fixed Income Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	30.00%		26.00%
Non-U.S. Equity Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	22.00%		25.00%
Other [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	16.00%		16.00%
Cash and Cash Equivalents [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	82		74
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	66,757		59,559
Fair Value, Inputs, Level 1 [Member] | Mutual Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	66,675	[1]	59,485	[2]
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	82		74
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0		0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	[1]	0	[2]
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0		0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0		0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	[1]	0	[2]
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Change In Benefit Obligation [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 0		$ 0

[1] Mutual funds were invested 32% in U.S. equity funds, 30% in U.S. fixed income funds, 22% in non-U.S. equity funds and 16% in other.

[2] Mutual funds were invested 33% in U.S. equity funds, 26% in U.S. fixed income funds, 25% in non-U.S. equity funds and 16% in other.