Pension and Other Postretirement Plans (Amounts Recognized in Financial Statements and Other Comprehensive Income) (Details) - USD ($)
|
Dec. 31, 2016 |
Dec. 31, 2015 |
| Defined Benefit Pension Plans |
|
|
| Amount recognized in the Company's consolidated financial statements |
|
|
| Assets |
$ 0
|
$ 0
|
| Liabilities |
(6,274,000)
|
(7,355,000)
|
| Net amount recognized |
(6,274,000)
|
(7,355,000)
|
| Amount recognized in accumulated other comprehensive income |
|
|
| Net loss |
9,443,000
|
11,039,000
|
| Prior service cost |
0
|
0
|
| Net amount recognized |
9,443,000
|
11,039,000
|
| Chairman and President Non-Qualified Defined Benefit Plans |
|
|
| Amount recognized in the Company's consolidated financial statements |
|
|
| Assets |
0
|
0
|
| Liabilities |
(26,232,000)
|
(22,735,000)
|
| Net amount recognized |
(26,232,000)
|
(22,735,000)
|
| Amount recognized in accumulated other comprehensive income |
|
|
| Net loss |
11,865,000
|
9,885,000
|
| Prior service cost |
641,000
|
700,000
|
| Net amount recognized |
12,506,000
|
10,585,000
|
| Defined Benefit Postretirement Healthcare Plans |
|
|
| Amount recognized in the Company's consolidated financial statements |
|
|
| Assets |
0
|
0
|
| Liabilities |
(3,366,000)
|
(3,307,000)
|
| Net amount recognized |
(3,366,000)
|
(3,307,000)
|
| Amount recognized in accumulated other comprehensive income |
|
|
| Net loss |
436,000
|
480,000
|
| Prior service cost |
258,000
|
361,000
|
| Net amount recognized |
$ 694,000
|
$ 841,000
|