Deferred Charges, Goodwill And Other Assets, Net (Narrative) (Details) - USD ($)
|
3 Months Ended |
6 Months Ended |
|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Mar. 31, 2019 |
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
|
| Derivatives, Net liability position |
$ 0
|
|
$ 0
|
|
|
| Collateral for fair value of assets |
0
|
|
0
|
|
|
| Credit Risk Contract [Member] |
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
|
| Net liability |
0
|
|
0
|
|
|
| Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
|
| Derivative notional amount |
425,000,000
|
|
425,000,000
|
|
|
| Ineffective gain (loss) in interest expense |
0
|
$ 100,000
|
0
|
$ 174,000
|
|
| Estimated additional amount to be reclassified to interest expense |
|
|
1,100,000
|
|
|
| Notional Value |
|
|
|
|
$ 90,000,000
|
| Terminated notional amount |
160,000,000
|
|
160,000,000
|
|
|
| Interest And Other Investment Income (Loss) [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member] |
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
|
| Reclassification of a gain |
$ 515,000
|
$ (100,000)
|
$ 1,794,000
|
$ (174,000)
|
|