I will admit that I had to look that one up.
They have been exceptionally legalistic since their first founding in the 1500s by Russian Orthodox priests in lapland. They are just as legalistic now since their arrival in America in the early 1600s. And the new, reformed model in Sweden and Finland (Old Apostolic Lutheran Church ~ First Born) is also very legalistic, and pietistic.
Swedenborg studied the phenomenon, organized it along more Masonic lines, and introduced it as the Church of Swedenborg. Sometimes Mormons are accused of having copied Swedenborg, but I think it's more a fact of their all copying the same source ~ the pre-laestidian Church of the First Born.
Not that there's anything wrong with being legalistic, but sometimes it can be carried to extremes that are harmful to the individual ~ e.g. COFB in Oklahoma, Idaho and elsewhere have a very, very high rate of infant and children ~ worse than in any third-world country. They wouldn't take you to the doctor if your life depended on it ~ literally.