|12 Months Ended|
Dec. 31, 2020
|Future Minimum Annual Rental Commitments Under Non-Cancelable Operating Leases||At December 31, 2020, future minimum annual rental commitments under these non-cancelable operating leases, with initial or remaining terms of one year or more, were as follows:
Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef