Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 27, 2016	Mar. 29, 2015
Income Statement [Abstract]
Net revenue	$ 28,689	$ 58,254
Cost of goods sold	20,400	36,860
Gross margin	8,289	21,394
Operating expenses:
Research, development and engineering	4,496	5,250
Selling, general and administrative	6,735	8,841
Restructuring and other charges	1,108	0
Total operating expenses	12,339	14,091
Income (loss) from operations	(4,050)	7,303
Interest income (expense), net	(30)	(34)
Other income (expense), net	88	(443)
Income (loss) before income taxes	(3,992)	6,826
Provision for income taxes	9	521
Net income (loss)	$ (4,001)	$ 6,305
Net income (loss) per share:
Basic (in usd per share)	$ (0.05)	$ 0.08
Diluted (in usd per share)	$ (0.05)	$ 0.08
Shares used in computing net income (loss) per share:
Basic (in shares)	75,523	74,700
Diluted (in shares)	75,523	77,265

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No definition available.

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Namespace Prefix:	mtsn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.