Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We rely on the information technology and systems maintained by Pillar and their employees to identify and manage material risks from cybersecurity threats. Pillar takes various actions, and incurs significant costs, to maintain and manage the operation and security of information technology and systems, including the data maintained in those systems. We believe that Pillar’s Director of Information Technology and his associates endeavor to evaluate and address cyber risks in alignment with our business objectives, operational needs and industry-accepted standards, such as the National Institute of Standards and Technology and CIS Critical Security Controls frameworks. Since we rely on accounting, financial, operational, management and other information systems, including the Internet and third-party hosted services to conduct our operations, store personal and sensitive data, process financial information and results of operations for internal reporting purposes and comply with financial reporting, legal and tax requirements, we have processes and procedures in place to monitor the prevention, detection, mitigation and remediation of cybersecurity risks. These include, but are not limited to (i) maintaining a defined and practiced incident response plan; (ii) employing appropriate incident prevention and detection safeguards; (iii) maintaining a defined disaster recovery policy and employing disaster recovery software, where appropriate; (iv) educating, training and testing our user community on information security practices and identification of potential cybersecurity risks and threats; and (v) reviewing and evaluating new developments in the cyber threat landscape. Recognizing the complexity and evolving nature of cybersecurity risk, we engage with a range of external support in evaluating, monitoring and testing our cybersecurity management systems and related cyber risks.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Pillar takes various actions, and incurs significant costs, to maintain and manage the operation and security of information technology and systems, including the data maintained in those systems. We believe that Pillar’s Director of Information Technology and his associates endeavor to evaluate and address cyber risks in alignment with our business objectives, operational needs and industry-accepted standards, such as the National Institute of Standards and Technology and CIS Critical Security Controls frameworks.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	The Audit Committee of the Board of Directors oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from Pillar’s Director of Information Technology regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, a detailed incident response plan is in place for contacting authorities and informing key stakeholders, including management. We do not believe we are reasonably likely to be materially affected from cybersecurity threats, including as a result of previous incidents.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee of the Board of Directors oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from Pillar’s Director of Information Technology regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, a detailed incident response plan is in place for contacting authorities and informing key stakeholders, including management.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee of the Board of Directors oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from Pillar’s Director of Information Technology regarding the development and advancement of its cybersecurity strategy, as well as the related risks.
Cybersecurity Risk Role of Management [Text Block]	The Audit Committee of the Board of Directors oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from Pillar’s Director of Information Technology regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, a detailed incident response plan is in place for contacting authorities and informing key stakeholders, including management.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Audit Committee of the Board of Directors oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from Pillar’s Director of Information Technology regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, a detailed incident response plan is in place for contacting authorities and informing key stakeholders, including management.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	In the event of a cybersecurity incident, a detailed incident response plan is in place for contacting authorities and informing key stakeholders, including management.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true