Sort num-fmt negative currency

rostrom

I'm finding that the built-in datatables sort options (on num-fmt type columns) are always appending negative currency values at the top of the table (descending), as such:

ASC

($1)

($10)

($100)

$1

$10

$100

DESC

($1)

($10)

($100)

$100

$10

$1

I can't seem to find any documentation that indicates how to customize/fix this.

The desired affect is as follows:

ASC

($100)

($10)

($1)

$1

$10

$100

DESC

$100

$10

$1

($1)

($10)

($100)