Equity	9 Months Ended
Sep. 30, 2017
Equity [Abstract]
Equity	4. Equity Issuance of Additional Common Stock On May 18, 2017, the stockholders of the Company approved the Medifast, Inc. Amended and Restated 2012 Share Incentive Plan (the “Amended and Restated 2012 Plan”) that increased the number of shares of the Company’s common stock, par value $.001 per share, that may be awarded under the Amended and Restated 2012 Plan by 600,000, to an aggregate of 1,600,000. During the three months ended September 30, 2017, we did not issue any common stock under the Amended and Restated 2012 Plan and the total number of shares available for issuance remains at 1,600,000 at September 30, 2017. Stock Repurchase Plan On June 14, 2017, the Company announced that it had established a stock repurchase plan under Rule 10b-18 of the Securities and Exchange Act of 1934, as amended (the “Stock Repurchase Plan”). The Stock Repurchase Plan permits the Company to repurchase up to 850,000 shares of its common stock until June 30, 2018, unless the plan is terminated earlier in accordance with its terms. There is no guarantee as to the exact number of shares of the Company’s common stock, if any, that will be purchased under the Stock Repurchase Plan. As of September 30, 2017, no shares have been repurchased by the Company under the Stock Repurchase Plan.

Equity

9 Months Ended

Sep. 30, 2017

4. Equity

Issuance of Additional Common Stock

On May 18, 2017, the stockholders of the Company approved the Medifast, Inc. Amended and Restated 2012 Share Incentive Plan (the “Amended and Restated 2012 Plan”) that increased the number of shares of the Company’s common stock, par value $.001 per share, that may be awarded under the Amended and Restated 2012 Plan by 600,000, to an aggregate of 1,600,000. During the three months ended September 30, 2017, we did not issue any common stock under the Amended and Restated 2012 Plan and the total number of shares available for issuance remains at 1,600,000 at September 30, 2017.

Stock Repurchase Plan

On June 14, 2017, the Company announced that it had established a stock repurchase plan under Rule 10b-18 of the Securities and Exchange Act of 1934, as amended (the “Stock Repurchase Plan”). The Stock Repurchase Plan permits the Company to repurchase up to 850,000 shares of its common stock until June 30, 2018, unless the plan is terminated earlier in accordance with its terms. There is no guarantee as to the exact number of shares of the Company’s common stock, if any, that will be purchased under the Stock Repurchase Plan. As of September 30, 2017, no shares have been repurchased by the Company under the Stock Repurchase Plan.