|
Post-Employment Benefits (Net Periodic Benefit Cost) (Details) (USD $)
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year |
$ 100,000 |
|
|
| Cost recognized in Consolidated Statements of Operations |
|
|
|
| Defined Benefit Plan, Amortization of Net Gains (Losses) |
0 |
100,000 |
100,000 |
| Net periodic (benefit) cost |
(45,000) |
(73,000) |
(88,000) |
| OPEB Plan [Member] |
|
|
|
| Cost recognized in Consolidated Statements of Operations |
|
|
|
| Service cost |
2,000 |
5,000 |
4,000 |
| Interest cost |
24,000 |
15,000 |
18,000 |
| Expected return on plan assets |
(70,000) |
(70,000) |
(67,000) |
| Amortization of prior service cost |
4,000 |
0 |
0 |
| Defined Benefit Plan, Amortization of Net Gains (Losses) |
(5,000) |
(23,000) |
(43,000) |
| Net periodic (benefit) cost |
(45,000) |
(73,000) |
(88,000) |
| Net loss (gain) |
102,000 |
247,000 |
64,000 |
| Total recognized in other comprehensive income |
102,000 |
247,000 |
64,000 |
| Total recognized in net periodic benefit cost and other comprehensive income |
$ 57,000 |
$ 174,000 |
$ (24,000) |