Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Company's matching contribution of employees' salary			3.50%
Cash surrender value of life insurance	$ 6,600,000	$ 6,400,000
Deferred compensation liability, current	378,000	68,000
Deferred compensation liability, non-current	$ 5,952,000	$ 5,518,000
401(K) [Member]
Defined Contribution Plan Disclosure [Line Items]
Company's matching contribution of employees' salary	4.00%	4.00%
Company's total contributions	$ 2,100,000	$ 1,900,000	$ 1,600,000
Discretionary contributions	$ 0	$ 0	$ 0

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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