Add should_presence attribute to @@multi_mapping_fields
Remove all namespaces
Using if .. x.any? to replace unless .. x.empty?
Remove unused method
Refactor repeated code
Refine: use some_hash.dup.each
Get url of 10-Q
Set parsed results to instance variables of Statement in parse_link()
[U] update @@multi_mapping_fields for PCLN
[M] Set variables to format of xxx_q1 instead of xxx_q1ytd