Copyright © 2011-present Workiva, Inc.

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Arelle includes a number of libraries with separate copyright notices and/or license terms. Your use of the source code for these libraries is subject to the terms and conditions of the following licenses:

Core product not including GUI operation

Python®: Copyright (c) 2001-2022 Python Software Foundation; All Rights Reserved. License

aniso8601: Copyright (c) 2021, Brandon Nielsen, All rights reserved. License

cherrypy: cheroot Copyright © 2004-2020, CherryPy Team. All rights reserved. License

cx_Freeze: Copyright © 2020-2022, Marcelo Duarte, 2007-2020, Anthony Tuininga, 2001-2006, Computronix (Canada) Ltd., Edmonton, Alberta, Canada. All rights reserved. License

graphviz: Copyright (c) 2013-2021 Sebastian Bank License

holidays: Copyright (c) 2014-2017, 2017-2021 License

isodate: Copyright 2009, Gerhard Weis. All rights reserved. License

lxml: Copyright 2004-2022 Ifrae. License

matplotlib: Copyright License

numpy: Copyright (c) 2005-2022, NumPy Developers. All rights reserved. License

openpyxl Copyright (c) 2010 openpyxl License

Pillow: Copyright © 2010-2022 by Alex Clark and contributors License

pycountry: Copyright (c) 2008-2015 gocept gmbh & co. kg License

PyParsing: Copyright © 2003-2022 Paul McGuire. License

rdflib: Copyright (c) 2002-2021, RDFLib Team. All rights reserved. License

regex: Copyright (c) 1998-2001 by Secret Labs AB. License

tornado: Copyright 2009 Facebook License

Operation with GUI

Bottle: © Copyright 2009-2022, Marcel Hellkamp License

TkTable: Copyright 1997-2002, Jeffrey Hobbs License

Operations using Database

pg8000: Copyright (c) 2007-2009, Mathieu Fenniak. All rights reserved. License

pymysql: Copyright (c) 2010, 2013 PyMySQL contributors License

pyodbc: No copyright. License

Plug-in Modules

Arelle includes plug-in modules which end-users may activate, some have author-specific licensing terms noted in each header and __pluginInfo__ structure.

For example, modules contributed by or maintained by U.S. SEC have a copyright notice “{module} was created by staff of the U.S. Securities and Exchange Commission. Data and content created by government employees within the scope of their employment are not subject to domestic copyright protection. 17 U.S.C. 105.”