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Summary of Accrued (Detail) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Summary Of Expenses [Line Items] |  |  |
Charges incurred during the period | $ 0 med_ChargesForExpensesIncurred |  |
Adjustments recorded during the period | (549,000)med_AdjustmentsRecordedDuringPeriod | [1] |
Payments during the period | (2,042,000)med_PaymentsForExpensesIncurred |  |
Accrued Balance | $ 3,943,000 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent |  | $ 6,534,000 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent
[1] | The adjustments to the accrual recorded in the first quarter of 2015 relate primarily to favorable termination agreements reached with landlords of closed Corporate Medifast Weight Control Centers.

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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