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Warranties
 12 Months Ended
Dec. 31, 2022
Guarantees [Abstract]  
Warranties Warranties
The Company has product warranties with various terms from one year from the date of first use or 18 months for parts, data center cooling solutions, and cleanroom systems to 25 years for certain heat exchangers. The Company has an obligation to replace parts if conditions under the warranty are met. A provision is made for estimated warranty costs at the time the related products are sold based upon the warranty period, historical trends, new products, and any known identifiable warranty issues.  

Changes in the warranty accrual are as follows:
 Years Ended December 31,
 202220212020
Warranty accrual:(in thousands)
Balance, beginning of period$13,769 $13,522 $12,652 
Payments made(6,584)(6,734)(5,751)
Provisions8,497 6,351 6,621 
Assumed in business combination (Note 4)
— 630 — 
     Balance, end of period$15,682 $13,769 $13,522 
Warranty expense:$8,497 $6,351 $6,621