Business Combination (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Dec. 10, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Consideration Paid
Goodwill		$ 85,727	$ 85,727	$ 3,229
Intangible Assets Acquired
Indefinite-lived intangible assets			19,700
Pro Forma Information
Revenues			611,158	562,563
Net income			$ 63,491	$ 80,507
Earnings per share: Basic (in dollars per share)			$ 1.21	$ 1.54
Earnings per share: Diluted (in dollars per share)			$ 1.18	$ 1.52
BasX, LLC
Business Acquisition [Line Items]
Payments to acquire businesses	$ 100,000
Contingent consideration payable	$ 80,000
Equity interests issuable (in dollars per share)	$ 0.004
Professional fees		$ 4,400
Consideration Paid
Accounts receivable	$ 13,699
Inventories	2,725
Contract assets	7,635
Prepaid expenses and other	341
Property, plant and equipment	13,169
Right of use assets	15,611
Intellectual property	70,329
Goodwill	82,498
Accounts payable	(9,388)
Accrued liabilities	(3,807)
Contract liabilities	(7,771)
Lease liabilities	(15,611)
Contingent Consideration - shares of AAON	(66,000)
Consideration paid	103,430
Intangible Assets Acquired
Definite-lived intangible assets	55,163
Indefinite-lived intangible assets	70,329
Goodwill, expected tax deductible amount	16,500
BasX, LLC | Trademarks
Intangible Assets Acquired
Indefinite-lived intangible assets	15,166
BasX, LLC | Intellectual property
Intangible Assets Acquired
Definite-lived intangible assets	6,479
BasX, LLC | Customer relationships
Intangible Assets Acquired
Definite-lived intangible assets	48,684
BasX, LLC | BasX Properties, LLC [Member]
Business Acquisition [Line Items]
Payments to acquire real estate	22,000
BasX, LLC | Former Owners of BasX
Business Acquisition [Line Items]
Contingent consideration payable	78,000
BasX, LLC | Key Employees of BasX
Business Acquisition [Line Items]
Contingent consideration payable	$ 2,000