Fair Value Measurements - Summary of Asset and Liability Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Equity securities	$ 4,655	$ 5,718
Key employee life insurance, cash surrender value	4,219	4,507
Total Assets	71,089	82,946
Liabilities:
Deferred executive compensation liability	10,500	11,243
Total Liabilities	10,500	11,243
Money market funds
Assets:
Available-for-sale	56,326	66,322
Mutual funds
Assets:
Available-for-sale	5,889	6,399
Level 1
Assets:
Equity securities	4,655	5,718
Key employee life insurance, cash surrender value	0	0
Total Assets	66,861	78,430
Liabilities:
Deferred executive compensation liability	0	0
Total Liabilities	0	0
Level 1 | Money market funds
Assets:
Available-for-sale	56,326	66,322
Level 1 | Mutual funds
Assets:
Available-for-sale	5,880	6,390
Level 2
Assets:
Equity securities	0	0
Key employee life insurance, cash surrender value	4,219	4,507
Total Assets	4,228	4,516
Liabilities:
Deferred executive compensation liability	10,500	11,243
Total Liabilities	10,500	11,243
Level 2 | Accounts payable and other accrued liabilities
Liabilities:
Deferred executive compensation liability	6,300	2,000
Level 2 | Other long-term liabilities
Liabilities:
Deferred executive compensation liability	4,200	9,200
Level 2 | Money market funds
Assets:
Available-for-sale	0	0
Level 2 | Mutual funds
Assets:
Available-for-sale	9	9
Level 3
Assets:
Equity securities	0	0
Key employee life insurance, cash surrender value	0	0
Total Assets	0	0
Liabilities:
Deferred executive compensation liability	0	0
Total Liabilities	0	0
Level 3 | Money market funds
Assets:
Available-for-sale	0	0
Level 3 | Mutual funds
Assets:
Available-for-sale	$ 0	$ 0