diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000..f5baadd833
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "arelle/locale/Sherfey"]
+	path = arelle/locale/Sherfey
+	url = git@github.com:SherfeyInv/Arelle.git
diff --git a/arelle/locale/Sherfey b/arelle/locale/Sherfey
new file mode 160000
index 0000000000..0f9bb5fb5e
--- /dev/null
+++ b/arelle/locale/Sherfey
@@ -0,0 +1 @@
+Subproject commit 0f9bb5fb5e86a55359f6cc96805b2cc03e353b04