Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 03, 2026	Oct. 03, 2025
Assets, Current [Abstract]
Cash and cash equivalents	$ 89,604	$ 112,142
Short-term investments	573,426	673,833
Accounts receivable, net	179,147	148,646
Inventories	281,518	237,844
Prepaid and other current assets	48,578	32,623
Total current assets	1,172,273	1,205,088
Property and equipment, net	246,308	230,291
Goodwill	335,416	336,315
Intangible assets, net	61,547	78,570
Deferred income taxes	181,993	207,999
Long-Term Investments	102,132	0
Other long-term assets	47,100	45,097
Total assets	2,146,769	2,103,360
Current liabilities:
Short-term debt	340,465	160,946
Accounts payable	72,823	67,588
Accrued liabilities	87,531	95,959
Finance lease liabilities	687	626
Total current liabilities	501,506	325,119
Finance lease liabilities	29,980	30,504
Financing obligation	36,558	37,014
Long-term debt	0	339,630
Other long-term liabilities	37,950	43,998
Total liabilities	605,994	776,265
Stockholders’ equity:
Common stock	76	74
Treasury stock, at cost	(330)	(330)
Accumulated other comprehensive income	1,066	5,034
Additional paid-in capital	1,584,217	1,562,377
Accumulated deficit	(44,254)	(240,060)
Total stockholders’ equity	1,540,775	1,327,095
Total liabilities and stockholders’ equity	$ 2,146,769	$ 2,103,360

Financing Obligation, Property, Plant And Equipment, Noncurrent

No definition available.

Name:	mtsi_FinancingObligationPropertyPlantAndEquipmentNoncurrent
Namespace Prefix:	mtsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).