Fair Value Measurements (Schedule of Assets and Liabilities Measured at a Fair Value on Recurring Basis) (Details) - USD ($)
|
Dec. 31, 2021 |
Dec. 31, 2020 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Investments related to deferred compensation liabilities |
$ 955,000
|
$ 948,000
|
| Recurring Basis [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Investments related to deferred compensation liabilities |
955,000
|
948,000
|
| Deferred compensation liabilities |
982,000
|
952,000
|
| Interest rate swaps liability |
8,232,000
|
18,927,000
|
| Recurring Basis [Member] | Level 1 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Investments related to deferred compensation liabilities |
955,000
|
948,000
|
| Deferred compensation liabilities |
982,000
|
952,000
|
| Recurring Basis [Member] | Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Interest rate swaps liability |
$ 8,232,000
|
$ 18,927,000
|