Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Option Activity

Stock option activity for the year ended December 31, 2021 were as follows:

	Number of Stock Options	Weighted- Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2021	380,143	$	35.46
Granted	—	$	—
Exercised	(48,769)	$	35.53
Expired	(3,634)	$	36.49
Forfeited	(9,961)	$	39.72
Outstanding at December 31, 2021	317,779	$	35.30	5.7	$	3,460
Exerciseable at December 31, 2021	258,174	$	33.75	5.3	$	3,211

Schedule of Nonvested Options Activity

Changes in nonvested stock options for the year ended December 31, 2021 were as follows:

	Number of Stock Options	Weighted- Average Grant Date Fair Value
Nonvested at January 1, 2021	191,677	$	14.73
Granted	—	$	—
Vested	(122,111)	$	14.10
Forfeited	(9,961)	$	15.32
Nonvested at December 31, 2021	59,605	$	15.93

Schedule of Assumptions Used

The assumptions used to compute the fair value of stock option grants under the Stock Incentive Plans for years ended December 31, 2021, 2020, and 2019 were as follows:

	Years Ended December 31,
	2021	2020		2019
Risk-free interest rate	N/A	1.59	%	1.92	%
Expected volatility	N/A	37.75	%	40.44	%
Expected dividends	N/A	—		—
Expected term (in months)	N/A	66		60

The weighted-average assumptions used to determine the net periodic benefit costs under the two plans were as follows:

	Years Ended December 31,
	2021	2020	2019
Discount rate used to determine pension expense
Pension Plan	2.50%	3.22%	4.23%
LaBarge Retirement Plan	1.85%	2.85%	4.00%

The weighted-average assumptions used to determine the benefit obligations under the two plans were as follows:

	December 31,
	2021	2020	2019
Discount rate used to determine value of obligations
Pension Plan	2.85%	2.50%	3.22%
LaBarge Retirement Plan	2.35%	1.85%	2.85%
Long-term rate of return - Pension Plan only	6.25%	6.25%	7.00%

Schedule of Restricted Stock Units Activity

Restricted stock unit activity for the year ended December 31, 2021 was as follows:

	Number of Restricted Stock Units	Weighted- Average Grant Date Fair Value
Outstanding at January 1, 2021	165,907	$	30.70
Granted	118,995	$	55.92
Vested	(74,958)	$	31.61
Forfeited	(7,662)	$	40.08
Outstanding at December 31, 2021	202,282	$	44.85

Schedule of Performance-based Units Activity

Performance stock activity for the year ended December 31, 2021 was as follows:

	Number of Performance Stock Units	Weighted- Average Grant Date Fair Value
Outstanding at January 1, 2021	288,954	$	31.95
Granted	182,886	$	49.76
Vested	(172,277)	$	33.76
Forfeited	—	$	—
Outstanding at December 31, 2021	299,563	$	41.16