Yeah. Jack, we're absolutely focused on extending margin really across all our platforms. As it relates to truck, we think the optimal level for us really starts with what's our reach there, which is in our view about 6,000 trucks. And we -- with some of the difficulty with the team and the owner-operator piece that I highlighted in my opening thoughts, we dipped under that a bit. And we want to get that to about 6,000 units. And as we stated prior, we also think getting over a multiyear horizon to get our dedicated contract configuration on par with that is really what we're focused on. Other margin enhancing activity, certainly for us is in the productivity and sweating our assets. We think we have opportunity there, particularly, and we've had some success here in December and January. You start to restore some of those team capacity levels because that's premium freight at a premium utility, and we want to make sure that we're -- and we do that really, really well, and we want to make sure we get our strength back to where we have historically been. And we continue to invest in decision science around this whole network solutioning around our company driver, our owner-operator, and now this whole Power Only piece to -- and we think there's margin enhancement through all of that by making better decisions on -- at all our moments of truth at the initial pricing, at the acceptance, and then at the dispatch level. And we're working from a margin enhancement standpoint to do some things on the driver community to root out some of what plagues the industry, particularly new people to the industry, which is this whole income variability that early in some one's career can cause some difficulty. And so, we're looking at some new approaches and models there that we think not only enhances retention, but lower overall cost of acquisition of capacity. And certainly, the quicker we get folks up, the experience scale, the better performance that we get into the business. And so, multiple fronts there and excited about what we've brought to the table to advance those things here, and in the part of 2020. And we'll start to -- I believe, start to get reap the benefits of that here in 2021.