COMMITMENTS AND CONTINGENCIES	9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES We are involved with various legal actions arising in the ordinary course of our activities. We accrue for those cases where the potential liability is estimable and probable. From time to time, we are involved in various legal proceedings arising in the ordinary course of our business. On January 20, 2017, K2M, Inc. filed suit against us in the United States District Court for the District of Delaware (K2M, Inc. v. OrthoPediatrics Corp. et al., Case No. 1:17-cv-0061) seeking unspecified damages for alleged infringement of U.S. Patent No. 9,532,816. The complaint was amended on August 21, 2017 to add, among other things, a claim of patent infringement regarding U.S. Patent No. 9,655,664. These patents relate to certain instruments used in our RESPONSE spine systems, which represent a portion of our total scoliosis portfolio. We have denied these claims and responded with counterclaims seeking declaratory relief that the patents in question are both invalid and not infringed. The parties attended a court-ordered mediation on October 24, 2017, which did not resolve the dispute, but as we move forward with this matter we welcome constructive discussions on a negotiated settlement. Nevertheless, we view our case as particularly strong and will continue to vigorously defend this matter. On January 8 and 22, 2018, we filed our first and second petitions for inter partes review ("IPR") with the United States Patent and Trademark Office's Patent Trial and Appeal Board ("PTAB") to challenge the patentability of U.S. Patent No. 9,532,816 (OrthoPediatrics Corp., v. K2M, Inc., Inter Partes Case Nos. IPR2018-00429 and IPR2018-00521). On June 28, 2018, the PTAB instituted the subject IPRs and set a trial date of February 20, 2019 for both IPRs. Additionally, the parties have agreed to stay the above-referenced district court proceedings pending the outcome of the subject IPR proceedings. The Court ordered the stay on July 10, 2018. Moreover, on August 21, 2018, we filed three petitions with PTAB to challenge the patentability of the above-referenced U.S. Patent No. 9,655,664 (OrthoPediatrics Corp., v. K2M, Inc., Inter Partes Case Nos. IPR2018-01546, IPR2018-01547, and IPR2018-01548). Although we believe that the K2M lawsuit is without merit and we will vigorously defend the claims asserted against us, intellectual property litigation can involve complex factual and legal questions, and an adverse resolution of this proceeding could have a material adverse effect on our business, operating results and financial condition. We are not presently a party to any other legal proceedings the outcome of which, if determined adversely to us, would individually or in the aggregate materially affect our financial position or results of operations or cash flows. As of September 30, 2018, we are contracted to pay royalties to individuals and entities that provide research and development services, which range from 0.5% to 20% of sales. Additionally, we have minimum royalty commitments of $500 annually through 2026. We have products in development that have milestone payments and royalty commitments. In any development project, there are significant variables that will affect the amount and timing of these payments and as of September 30, 2018, we have not been able to determine the amount and timing of payments. We do not anticipate these future payments will have a material impact on our financial results.

We are involved with various legal actions arising in the ordinary course of our activities. We accrue for those cases where the potential liability is estimable and probable. From time to time, we are involved in various legal proceedings arising in the ordinary course of our business. On January 20, 2017, K2M, Inc. filed suit against us in the United States District Court for the District of Delaware (K2M, Inc. v. OrthoPediatrics Corp. et al., Case No. 1:17-cv-0061) seeking unspecified damages for alleged infringement of U.S. Patent No. 9,532,816. The complaint was amended on August 21, 2017 to add, among other things, a claim of patent infringement regarding U.S. Patent No. 9,655,664. These patents relate to certain instruments used in our RESPONSE spine systems, which represent a portion of our total scoliosis portfolio. We have denied these claims and responded with counterclaims seeking declaratory relief that the patents in question are both invalid and not infringed. The parties attended a court-ordered mediation on October 24, 2017, which did not resolve the dispute, but as we move forward with this matter we welcome constructive discussions on a negotiated settlement. Nevertheless, we view our case as particularly strong and will continue to vigorously defend this matter. On January 8 and 22, 2018, we filed our first and second petitions for inter partes review ("IPR") with the United States Patent and Trademark Office's Patent Trial and Appeal Board ("PTAB") to challenge the patentability of U.S. Patent No. 9,532,816 (OrthoPediatrics Corp., v. K2M, Inc., Inter Partes Case Nos. IPR2018-00429 and IPR2018-00521). On June 28, 2018, the PTAB instituted the subject IPRs and set a trial date of February 20, 2019 for both IPRs. Additionally, the parties have agreed to stay the above-referenced district court proceedings pending the outcome of the subject IPR proceedings. The Court ordered the stay on July 10, 2018. Moreover, on August 21, 2018, we filed three petitions with PTAB to challenge the patentability of the above-referenced U.S. Patent No. 9,655,664 (OrthoPediatrics Corp., v. K2M, Inc., Inter Partes Case Nos. IPR2018-01546, IPR2018-01547, and IPR2018-01548). Although we believe that the K2M lawsuit is without merit and we will vigorously defend the claims asserted against us, intellectual property litigation can involve complex factual and legal questions, and an adverse resolution of this proceeding could have a material adverse effect on our business, operating results and financial condition.