Fair Value Measurements - Schedule of Fair Value of Assets (Details) - Fair value, measurements, recurring - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 36,075	$ 31,356
Mutual funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	33,555	28,520
Money market funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	2,520	2,836
Fair Value, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	33,555	28,520
Fair Value, Level 1 | Mutual funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	33,555	28,520
Fair Value, Level 1 | Money market funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	0	0
Fair Value, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	2,520	2,836
Fair Value, Level 2 | Mutual funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	0	0
Fair Value, Level 2 | Money market funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	2,520	2,836
Fair Value, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Fair Value, Level 3 | Mutual funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	0	0
Fair Value, Level 3 | Money market funds | Investments, employee benefit plans, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds and money market funds, fair value	$ 0	$ 0