Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 29, 2024	Sep. 29, 2023
Assets, Current [Abstract]
Cash and cash equivalents	$ 114,990	$ 173,952
Short-term investments	361,423	340,574
Accounts Receivable, after Allowance for Credit Loss, Current	120,222	91,253
Inventories	177,806	136,300
Prepaid and other current assets	23,997	19,114
Total current assets	798,438	761,193
Property and equipment, net	180,229	149,496
Goodwill	330,373	323,398
Intangible assets, net	93,013	66,994
Deferred income taxes	214,061	218,107
Other long-term assets	60,274	34,056
Total assets	1,676,388	1,553,244
Current liabilities:
Finance lease liabilities	948	1,162
Accounts payable	44,341	24,966
Accrued liabilities	63,564	57,397
Total current liabilities	108,853	83,525
Finance lease liabilities	31,427	31,776
Financing obligation	9,156	9,307
Long-term debt	447,707	447,134
Other long-term liabilities	33,632	33,902
Total liabilities	630,775	605,644
Stockholders’ equity:
Common stock	72	71
Treasury stock, at cost	(330)	(330)
Accumulated other comprehensive loss	(1,935)	(3,635)
Additional paid-in capital	1,283,009	1,214,203
Accumulated deficit	(235,203)	(262,709)
Total stockholders’ equity	1,045,613	947,600
Total liabilities and stockholders' equity	$ 1,676,388	$ 1,553,244

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).