Amortization of Acquisition Related Fair Value Adjustments

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets and impairments (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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No definition available.

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- Definition

Loss (Gain) on Modification of Debt

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Segment Information Income (Loss) by Segment and Reconciliation to Income Before Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 25, 2015	Oct. 26, 2014	Jul. 27, 2014	Apr. 27, 2014	Jan. 26, 2014	Oct. 27, 2013	Jul. 28, 2013	Apr. 28, 2013	Jan. 25, 2015	Jan. 26, 2014	Jan. 27, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	$ (13,759)us-gaap_OperatingIncomeLoss	$ 22,810us-gaap_OperatingIncomeLoss	$ 22,057us-gaap_OperatingIncomeLoss	$ 11,149us-gaap_OperatingIncomeLoss	$ (166,717)us-gaap_OperatingIncomeLoss	$ 13,265us-gaap_OperatingIncomeLoss	$ 24,457us-gaap_OperatingIncomeLoss	$ 20,078us-gaap_OperatingIncomeLoss	$ 42,257us-gaap_OperatingIncomeLoss	$ (108,917)us-gaap_OperatingIncomeLoss	$ 15,589us-gaap_OperatingIncomeLoss
Stock-based compensation, pre-tax									29,629	24,589	24,528
Write-off of deferred financing costs and debt discount									0smtc_LossGainonModificationofDebt	7,093smtc_LossGainonModificationofDebt	0smtc_LossGainonModificationofDebt
Inventory write-downs									0us-gaap_InventoryWriteDown	15,047us-gaap_InventoryWriteDown	0us-gaap_InventoryWriteDown
Amortization of fair value adjustments related to acquired PP&E									(929)	2,529	37,693
Interest expense, net									5,927us-gaap_InterestExpense	18,174us-gaap_InterestExpense	14,363us-gaap_InterestExpense
Interest income and other (expense) income, net									165us-gaap_OtherNonoperatingIncomeExpense	(1,390)us-gaap_OtherNonoperatingIncomeExpense	(977)us-gaap_OtherNonoperatingIncomeExpense
(Loss) income before taxes									36,495	(128,481)	249
Semiconductor Products Group [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)									136,823	141,569	133,854
All Other Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)									(10,558)	(2,744)	4,995
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)									126,265	138,825	138,849
Corporate, Non-Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Intangible amortization and impairments									31,449	190,529	10,248
Stock-based compensation, pre-tax									29,629	24,589	24,528
Write-off of deferred financing costs and debt discount									0	8,773	0
Inventory write-downs									0	2,408	39,406
Restructuring charges									1,285	3,086	0
Other non-segment related expenses									3,310	1,522	29,382
Amortization of fair value adjustments related to acquired PP&E									18,335	16,835	19,696
Interest expense, net									5,927	18,174	14,363
Interest income and other (expense) income, net									$ (165)	$ 1,390	$ 977