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Revenue Recognition (Tables)
 3 Months Ended
Jan. 01, 2022
Revenue from Contract with Customer [Abstract]  
Summary of Revenue from Contracts with Customers
The following tables summarize revenue from contracts with customers (in thousands):

Sales by revenue type and segment
Three Months Ended
January 1, 2022January 2, 2021
OEM Laser SourcesIndustrial Lasers & SystemsOEM Laser SourcesIndustrial Lasers & Systems
Net sales:
Products(1)
$148,525 $115,641 $125,577 $89,312 
Other product and service revenues(2)
94,445 25,896 85,585 25,579 
Total net sales$242,970 $141,537 $211,162 $114,891 
(1) Net sales primarily recognized at a point in time.
(2) Includes sales of spare parts, related accessories and other consumable parts as well as revenues from service agreements, of which $17.5 million and $16.0 million for the three months ended January 1, 2022 and January 2, 2021, respectively, were recognized over time.

Sales by market application and segment
Three Months Ended
January 1, 2022January 2, 2021
OEM Laser SourcesIndustrial Lasers & SystemsOEM Laser SourcesIndustrial Lasers & Systems
Net sales:
Microelectronics$149,003 $24,019 $128,173 $20,675 
Precision manufacturing14,441 90,113 11,859 69,591 
Instrumentation75,013 18,930 67,276 17,951 
Aerospace and defense4,513 8,475 3,854 6,674 
Total net sales$242,970 $141,537 $211,162 $114,891 
Summary of Customer Deposits and Deferred Revenue
A roll forward of our customer deposits and deferred revenue is as follows (in thousands):
Three Months Ended
January 1, 2022January 2, 2021
Beginning balance (1)
$65,404 $56,339 
Additions to customer deposits and deferred revenue54,844 45,694 
Amount of customer deposits and deferred revenue recognized in income(48,633)(42,081)
Translation adjustments(1,049)1,187 
Ending balance (2)
$70,566 $61,139 

(1) Beginning customer deposits and deferred revenue as of October 2, 2021 include $49,445 of current portion and $15,959 of long-term portion. Beginning customer deposits and deferred revenue as of October 3, 2020 include $42,715 of current portion and $13,624 of long-term portion.
(2) Ending customer deposits and deferred revenue as of January 1, 2022 include $54,915 of current portion and $15,651 of long-term portion. Ending customer deposits and deferred revenue as of January 2, 2021 include $48,119 of current portion and $13,020 of long-term portion.
Summary of Estimated Revenue Expected to be Recognized in the Future The following table includes estimated revenue expected to be recognized in the future related to performance obligations for sales of maintenance agreements, extended warranties, installation, and contracts with customer acceptance provisions included in customer deposits and deferred revenue as of January 1, 2022 (in thousands):
Remainder of fiscal 2022ThereafterTotal
Performance obligations as of January 1, 2022$52,266 $18,300 $70,566