The concept is based on the Super Sentai series of shows, however, is not an English dub of the original, but rather a new production with English-speaking actors spliced in with the original Japanese footage to varying ratios. Due to the very Japanese nature of many of Sentai's stories, the American adaptations are generally changed to fit its Western audience. (Ironically, the American Power Rangers was dubbed into Japanese. This practice stopped, however, after Lightspeed Rescue.) In 2011, Power Rangers S.P.D. was dubbed into Japanese as well, followed in 2012 by Mystic Force and in late 2013 by Samurai. Power Rangers was produced and distributed by Saban Entertainment from 1993 until the end of 2001 and was broadcast on the FOX Kids Network. At the end of 2001, when Wild Force was in early production, Power Rangers and Saban Entertainment were taken over by Walt Disney Television, BVS Entertainment. However, the show continued to air on FOX until Fox Kids was closed down in the middle of the Wild Force run. The remainder of the series and all subsequent series have aired on various Disney-owned stations up until the end of 2009. The next year, the series Mighty Morphin was rebroadcast on ABC Kids with footage restored to better quality, some scenes cut from the original episodes, and comic-book style graphics added. It was announced on May 12, 2010 that Saban Brands bought the Power Rangers franchise including all world wide rights and property from the Walt Disney Company. It was also announced that Saban would be entering a partnership with Nickelodeon to bring the new 18th season to Nickelodeon in early 2011 and older episodes of series such as Jungle Fury and Dino Thunder later in 2011. Power Rangers Samurai becomes the first series to be shot and broadcast in HD and the second series to be split into more than one season: Power Rangers Super Samurai. Power Rangers Megaforce was the next season of Power Rangers. The season celebrated the 20th anniversary of Power Rangers in 2013. This initiated a major event called Power Rangers 20. The second season of Megaforce, titled Power Rangers Super Megaforce, incorporated elements from Gokaiger. That made the first hybrid adaptation since Mighty Morphin Power Rangers, and historic rangers made an appearance. In February 2014 Saban announced the release of Power Rangers Dino Charge in 2015, that adapted Zyuden Sentai Kyoryuger instead of Gokaiger's successor Tokumei Sentai Go-Busters. This marks the first time a Super Sentai series has been skipped over for a more recent one. Power Rangers will continue to air on Nickelodeon until at least 2018. In February 12 2018, Saban Brands has renewed their partnership with Nickelodeon through 2021.