Subsequent Events	3 Months Ended
Mar. 31, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	NOTE 15 – SUBSEQUENT EVENTS Sale of Waste Assets Amendment No. 1 and Amendment No. 2 to Equity Securities Purchase Agreement As previously disclosed, on February 20, 2018, Meridian Waste Solutions, Inc. ("Meridian" or the "Company"), Meridian Waste Operations, Inc. ("Seller" or "Operations" and together with Meridian, the "Seller Parties"), Meridian Waste Acquisitions, LLC ("Buyer"), a Delaware limited liability company formed by Warren Equity Partners Fund II, and Jeffrey S. Cosman, an officer, director and majority shareholder of Meridian ("Cosman"), entered into an Equity Securities Purchase Agreement (as amended, the "Purchase Agreement"). Upon the terms and subject to the conditions set forth in the Purchase Agreement, on April 20, 2018 Buyer purchased from Seller all of the membership interests in each of the direct wholly-owned subsidiaries of Seller (the "Acquired Parent Entities" and together with each direct and indirect subsidiary of the Acquired Parent Entities, the "Acquired Entities"), which constitute the Solid Waste Business (as defined below), and each such Acquired Parent Entity continues as a wholly-owned subsidiary of Buyer (the "Transaction"). Pursuant to the Purchase Agreement, upon the consummation of the Transaction (the "Closing"), Buyer paid Seller Parties $3.0 million in cash; satisfied $75.8 million of outstanding indebtedness under the Prior Credit Agreement (as defined below); and assumed the Acquired Entities' obligations under certain equipment leases and other operating indebtedness and obligations. At the Closing, the Seller Parties retained approximately $8.2 million of outstanding indebtedness under the New Credit Agreement (as defined below), including accrued interest in an aggregate amount approximately equal to $1.0 million, and all other assets and obligations of Meridian, the Technologies Business and the Innovations Business (each as defined below). Pursuant to the terms of the Purchase Agreement, at the Closing, Meridian issued to Buyer a warrant (the "Company Warrant") to purchase shares of Meridian's common stock, par value $0.025 equal to two percent of the issued and outstanding shares of capital stock of Meridian on a fully-diluted basis as of Closing (subject to adjustment as set forth therein and as more fully described in the Purchase Agreement and the Company Warrant) at a per share purchase price equal to $1.00 (the "Company Warrant Exercise Price"). The Company Warrant Exercise Price is subject to adjustment as more fully set forth in the Company Warrant. On March 30, 2018, Seller Parties and Buyer entered into Amendment #1 to the Purchase Agreement ("Amendment No. 1") to (i) provide an exception to the indemnification obligations of Seller Parties with respect to Losses (as defined in the Purchase Agreement) arising out of or relating to an acquisition of certain solid waste assets by an Acquired Entity following the execution date of the Purchase Agreement and the assets and liabilities assumed by such Acquired Entity in connection with the acquisition and (ii) to amend the description of the Company Warrant to provide that the Company Warrant Exercise Price shall be equal to the lower of (a) $1.25 or (b) the average of the daily high and low sale prices per share over the 30 days ending one day prior to the Closing, provided that such price shall not be less than $1.00 per share of Common Stock. In addition, on April 20, 2018, prior to the Closing, Parties and Buyer entered into Amendment #2 to the Purchase Agreement ("Amendment No. 2") to, among other things, (i) require the Seller Parties to take certain actions related to the Company's 401(k) plans and (ii) require the Company to maintain the employment agreement of a specific employee and indemnify Buyer for certain breaches of such employee's employment agreement. On April 20, 2018, in connection with the Closing of the Transaction, the Company issued the Company Warrant to Buyer to purchase 106,605 shares of the Company's Common Stock in consideration of $100,000. The Company Warrant is exercisable for a per share exercise price per share of $1.00. Second Amended and Restated Credit Facility On April 20, 2018 (the "Restatement Date"), Meridian closed a Second Amended and Restated Credit and Guaranty Agreement (the "New Credit Agreement") by and among Operations, Mobile Science Technologies, Inc. ("Mobile"), Attis Healthcare, LLC ("Healthcare"), Integrity Lab Solutions, LLC, ("Integrity"), Red X Medical LLC ("Red X"), Welness Benefits, LLC ("Welness"), LGMG, LLC ("LGMG"), Attis Innovations, LLC ("Attis Innovations"), Advanced Lignin Biocomposites LLC ("Advanced Lignin"), Attis Envicare Medical Waste, LLC ("Envicare"), Attis Genetics, LLC ("Genetics"), Attis Federal Labs, LLC ("Federal Labs") and Attis Commercial Labs, LLC ("Commercial Labs" and together with Mobile, Healthcare, Integrity, Red X, Welness, LGMG, Attis Innovations, and Advanced Lignin, Envicare, Genetics and Federal Labs, the "New Credit Companies"), the Company and certain subsidiaries of the Company, as guarantors, the lenders party thereto from time to time and Goldman Sachs Specialty Lending Group, L.P., as Administrative Agent, Collateral Agent, and Lead Arranger. The Credit Agreement amended and restated the Amended and Restated Credit and Guaranty Agreement entered into as of February 15, 2017 by and among Meridian, certain of the Acquired Entities, and certain current or former subsidiaries of the Company, as Guarantors and co-borrowers, the Lenders party thereto from time to time and Goldman Sachs Specialty Lending Group, L.P., as Administrative Agent, Collateral Agent, and Lead Arranger (as amended prior to the Restatement Date, the "Prior Credit Agreement"). Pursuant to the New Credit Agreement, the Lenders thereunder have agreed to waive any mandatory prepayments under the Prior Credit Agreement in connection to the Transaction and restructure the remaining indebtedness and accrued interest under the Prior Credit Agreement as a term loan payable by the New Credit Companies, in an aggregate amount of approximately $8.2 million (the "Loan"), including interest accrued but unpaid for the interest periods ending on February 28, 2018 and March 31, 2018 in an aggregate amount of approximately $1.0 million. As disclosed above, approximately $75.8 million of outstanding indebtedness under the Prior Credit Agreement was paid at the Closing of the Transaction. The Loan matures on December 22, 2020, principal amounts of the Term Loans shall be repaid in consecutive quarterly installments of $350,000 on the last day of each fiscal quarter commencing on June 30, 2018, unless such Loan becomes due and payable earlier by acceleration or otherwise. So long as no default or event of default has occurred that is then continuing, the New Credit Companies have the option to convert any part of the Loan equal to $500,000 and integral multiples of $100,000 in excess thereof into a "Base Rate Loan" or a "LIBOR Rate Loan." Base Rate Loans bear interest at the greatest of (i) the rate of interest quoted in The Wall Street Journal, Money Rates Section as the Prime Rate in effect on such date, (ii) the rate per annum equal to the weighted average of the rates on overnight federal funds transactions with members of the Federal Reserve System arranged by federal funds brokers in effect on such day, plus one-half of 1%, (iii) the sum of (1) the Adjusted LIBOR Rate (as defined below) for a period of one month and (2) 1.00%, in each instance, as of such day, and (iv) 4.25%, plus 7.00%. LIBOR Rate Loans bear interest at the greater of (i) the rate per annum obtained by dividing (a)(1) the rate per annum equal to the rate determined by the Administrative Agent to be the London interbank offered rate administered by the ICE Benchmark Administration for deposits with a term equivalent to such period in U.S. dollars displayed on the ICE LIBOR USD page of the Reuters screen (the "Eurodollar Screen Rate") or (2) in the event the Eurodollar Screen Rate is not available, the rate per annum equal to the offered rate that is set forth on or in such other available quotation page or service as is acceptable to the Administrative Agent in its sole discretion and the provide an average ICE Benchmark Administration Limited Interest Settlement Rate or another London interbank offered rate administered by any other person that takes over the administration of such rate for deposits with a term equivalent to such period in U.S. dollars, or (3) in the event the rates reference in preceding clauses (1) and (2) are not available or if such information, in the reasonable judgment of the Administrative Agent shall cease to accurately reflect the rate offered by leading banks in the London interbank market as reported by any publicly available source of similar market data selected by the Administrative Agent, the rate per annum equal to the rate determined by the Administrative Agent to be the offered rate (collectively, the "Adjusted LIBOR Rate") plus 8.00%. The amounts outstanding pursuant to the Loan are secured by a first position security interest in substantially all of the Company's assets and the New Credit Companies' assets in favor of the Agent, in accordance with that certain Amended and Restated Pledge and Security Agreement dated as of April 20, 2018 (the "New Pledge and Security Agreement"). The Credit Agreement and the New Pledge and Security Agreement contain customary representations and warranties as well as customary affirmative and negative covenants. Negative covenants include, among others, limitations on incurrence of liens and secured indebtedness, and limitations on incurrence of any indebtedness by the Company's subsidiaries. The Credit Agreement also contains customary events of default. Upon the occurrence and during the continuance of an event of default, the Lender may declare the outstanding loans and all other obligations under the Credit Agreement immediately due and payable. The Credit Agreement also contains financial covenants for adjusted EBITDA and minimum consolidated liquidity, effective September 30, 2018. Common Stock The Company effected a 1 for 8 reverse stock split on March 18, 2019. All stock prices, share amounts, per share information, stock options and stock warrants in this report reflect the impact of the reverse stock split applied retroactively. Every hundred shares of issued and outstanding Company common stock was automatically combined into one issued and outstanding share of common stock, without any change in the par value per share. All fractional shares resulting from the reverse split were rounded to a full share.

Subsequent Events

3 Months Ended

Mar. 31, 2018

NOTE 15 – SUBSEQUENT EVENTS

Sale of Waste Assets

Amendment No. 1 and Amendment No. 2 to Equity Securities Purchase Agreement

As previously disclosed, on February 20, 2018, Meridian Waste Solutions, Inc. ("Meridian" or the "Company"), Meridian Waste Operations, Inc. ("Seller" or "Operations" and together with Meridian, the "Seller Parties"), Meridian Waste Acquisitions, LLC ("Buyer"), a Delaware limited liability company formed by Warren Equity Partners Fund II, and Jeffrey S. Cosman, an officer, director and majority shareholder of Meridian ("Cosman"), entered into an Equity Securities Purchase Agreement (as amended, the "Purchase Agreement").

Upon the terms and subject to the conditions set forth in the Purchase Agreement, on April 20, 2018 Buyer purchased from Seller all of the membership interests in each of the direct wholly-owned subsidiaries of Seller (the "Acquired Parent Entities" and together with each direct and indirect subsidiary of the Acquired Parent Entities, the "Acquired Entities"), which constitute the Solid Waste Business (as defined below), and each such Acquired Parent Entity continues as a wholly-owned subsidiary of Buyer (the "Transaction"). Pursuant to the Purchase Agreement, upon the consummation of the Transaction (the "Closing"), Buyer paid Seller Parties $3.0 million in cash; satisfied $75.8 million of outstanding indebtedness under the Prior Credit Agreement (as defined below); and assumed the Acquired Entities' obligations under certain equipment leases and other operating indebtedness and obligations. At the Closing, the Seller Parties retained approximately $8.2 million of outstanding indebtedness under the New Credit Agreement (as defined below), including accrued interest in an aggregate amount approximately equal to $1.0 million, and all other assets and obligations of Meridian, the Technologies Business and the Innovations Business (each as defined below). Pursuant to the terms of the Purchase Agreement, at the Closing, Meridian issued to Buyer a warrant (the "Company Warrant") to purchase shares of Meridian's common stock, par value $0.025 equal to two percent of the issued and outstanding shares of capital stock of Meridian on a fully-diluted basis as of Closing (subject to adjustment as set forth therein and as more fully described in the Purchase Agreement and the Company Warrant) at a per share purchase price equal to $1.00 (the "Company Warrant Exercise Price"). The Company Warrant Exercise Price is subject to adjustment as more fully set forth in the Company Warrant.

On March 30, 2018, Seller Parties and Buyer entered into Amendment #1 to the Purchase Agreement ("Amendment No. 1") to (i) provide an exception to the indemnification obligations of Seller Parties with respect to Losses (as defined in the Purchase Agreement) arising out of or relating to an acquisition of certain solid waste assets by an Acquired Entity following the execution date of the Purchase Agreement and the assets and liabilities assumed by such Acquired Entity in connection with the acquisition and (ii) to amend the description of the Company Warrant to provide that the Company Warrant Exercise Price shall be equal to the lower of (a) $1.25 or (b) the average of the daily high and low sale prices per share over the 30 days ending one day prior to the Closing, provided that such price shall not be less than $1.00 per share of Common Stock.

In addition, on April 20, 2018, prior to the Closing, Parties and Buyer entered into Amendment #2 to the Purchase Agreement ("Amendment No. 2") to, among other things, (i) require the Seller Parties to take certain actions related to the Company's 401(k) plans and (ii) require the Company to maintain the employment agreement of a specific employee and indemnify Buyer for certain breaches of such employee's employment agreement.

On April 20, 2018, in connection with the Closing of the Transaction, the Company issued the Company Warrant to Buyer to purchase 106,605 shares of the Company's Common Stock in consideration of $100,000. The Company Warrant is exercisable for a per share exercise price per share of $1.00.

Second Amended and Restated Credit Facility

On April 20, 2018 (the "Restatement Date"), Meridian closed a Second Amended and Restated Credit and Guaranty Agreement (the "New Credit Agreement") by and among Operations, Mobile Science Technologies, Inc. ("Mobile"), Attis Healthcare, LLC ("Healthcare"), Integrity Lab Solutions, LLC, ("Integrity"), Red X Medical LLC ("Red X"), Welness Benefits, LLC ("Welness"), LGMG, LLC ("LGMG"), Attis Innovations, LLC ("Attis Innovations"), Advanced Lignin Biocomposites LLC ("Advanced Lignin"), Attis Envicare Medical Waste, LLC ("Envicare"), Attis Genetics, LLC ("Genetics"), Attis Federal Labs, LLC ("Federal Labs") and Attis Commercial Labs, LLC ("Commercial Labs" and together with Mobile, Healthcare, Integrity, Red X, Welness, LGMG, Attis Innovations, and Advanced Lignin, Envicare, Genetics and Federal Labs, the "New Credit Companies"), the Company and certain subsidiaries of the Company, as guarantors, the lenders party thereto from time to time and Goldman Sachs Specialty Lending Group, L.P., as Administrative Agent, Collateral Agent, and Lead Arranger. The Credit Agreement amended and restated the Amended and Restated Credit and Guaranty Agreement entered into as of February 15, 2017 by and among Meridian, certain of the Acquired Entities, and certain current or former subsidiaries of the Company, as Guarantors and co-borrowers, the Lenders party thereto from time to time and Goldman Sachs Specialty Lending Group, L.P., as Administrative Agent, Collateral Agent, and Lead Arranger (as amended prior to the Restatement Date, the "Prior Credit Agreement").

Pursuant to the New Credit Agreement, the Lenders thereunder have agreed to waive any mandatory prepayments under the Prior Credit Agreement in connection to the Transaction and restructure the remaining indebtedness and accrued interest under the Prior Credit Agreement as a term loan payable by the New Credit Companies, in an aggregate amount of approximately $8.2 million (the "Loan"), including interest accrued but unpaid for the interest periods ending on February 28, 2018 and March 31, 2018 in an aggregate amount of approximately $1.0 million. As disclosed above, approximately $75.8 million of outstanding indebtedness under the Prior Credit Agreement was paid at the Closing of the Transaction.

The Loan matures on December 22, 2020, principal amounts of the Term Loans shall be repaid in consecutive quarterly installments of $350,000 on the last day of each fiscal quarter commencing on June 30, 2018, unless such Loan becomes due and payable earlier by acceleration or otherwise. So long as no default or event of default has occurred that is then continuing, the New Credit Companies have the option to convert any part of the Loan equal to $500,000 and integral multiples of $100,000 in excess thereof into a "Base Rate Loan" or a "LIBOR Rate Loan." Base Rate Loans bear interest at the greatest of (i) the rate of interest quoted in The Wall Street Journal, Money Rates Section as the Prime Rate in effect on such date, (ii) the rate per annum equal to the weighted average of the rates on overnight federal funds transactions with members of the Federal Reserve System arranged by federal funds brokers in effect on such day, plus one-half of 1%, (iii) the sum of (1) the Adjusted LIBOR Rate (as defined below) for a period of one month and (2) 1.00%, in each instance, as of such day, and (iv) 4.25%, plus 7.00%. LIBOR Rate Loans bear interest at the greater of (i) the rate per annum obtained by dividing (a)(1) the rate per annum equal to the rate determined by the Administrative Agent to be the London interbank offered rate administered by the ICE Benchmark Administration for deposits with a term equivalent to such period in U.S. dollars displayed on the ICE LIBOR USD page of the Reuters screen (the "Eurodollar Screen Rate") or (2) in the event the Eurodollar Screen Rate is not available, the rate per annum equal to the offered rate that is set forth on or in such other available quotation page or service as is acceptable to the Administrative Agent in its sole discretion and the provide an average ICE Benchmark Administration Limited Interest Settlement Rate or another London interbank offered rate administered by any other person that takes over the administration of such rate for deposits with a term equivalent to such period in U.S. dollars, or (3) in the event the rates reference in preceding clauses (1) and (2) are not available or if such information, in the reasonable judgment of the Administrative Agent shall cease to accurately reflect the rate offered by leading banks in the London interbank market as reported by any publicly available source of similar market data selected by the Administrative Agent, the rate per annum equal to the rate determined by the Administrative Agent to be the offered rate (collectively, the "Adjusted LIBOR Rate") plus 8.00%.

The amounts outstanding pursuant to the Loan are secured by a first position security interest in substantially all of the Company's assets and the New Credit Companies' assets in favor of the Agent, in accordance with that certain Amended and Restated Pledge and Security Agreement dated as of April 20, 2018 (the "New Pledge and Security Agreement").

The Credit Agreement and the New Pledge and Security Agreement contain customary representations and warranties as well as customary affirmative and negative covenants. Negative covenants include, among others, limitations on incurrence of liens and secured indebtedness, and limitations on incurrence of any indebtedness by the Company's subsidiaries. The Credit Agreement also contains customary events of default. Upon the occurrence and during the continuance of an event of default, the Lender may declare the outstanding loans and all other obligations under the Credit Agreement immediately due and payable. The Credit Agreement also contains financial covenants for adjusted EBITDA and minimum consolidated liquidity, effective September 30, 2018.

Common Stock

The Company effected a 1 for 8 reverse stock split on March 18, 2019. All stock prices, share amounts, per share information, stock options and stock warrants in this report reflect the impact of the reverse stock split applied retroactively. Every hundred shares of issued and outstanding Company common stock was automatically combined into one issued and outstanding share of common stock, without any change in the par value per share. All fractional shares resulting from the reverse split were rounded to a full share.