|9 Months Ended|
Sep. 30, 2021
|Summary of revenue categories||
Revenue comprises the following categories (in thousands):
Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
No definition available.