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Sales by Channel (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net Revenue	$ 72,345	$ 73,364
Take Shape For Life
Segment Reporting Information [Line Items]
Net Revenue	56,674	52,102
Medifast Direct
Segment Reporting Information [Line Items]
Net Revenue	10,927	14,426
Medifast Weight Control Centers- Franchise
Segment Reporting Information [Line Items]
Net Revenue	4,247	4,681
Medifast Wholesale
Segment Reporting Information [Line Items]
Net Revenue	$ 497	$ 2,155

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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+ References

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