Robert J. Willett - Cognex Corp.
Operator
Yeah, I would say, over the last four years, we've demonstrated very substantial and relatively consistent growth in consumer electronics and that's been around a number of customers, and it's been around particularly final assembly and test but also around really new technologies that are coming into the electronics market. So, on that first part, I think that it's just a continuing drive towards the need to replace literally hundreds of thousands of bodies who are involved and people who are involved in manufacturing products and whose eyes and brains are involved in that process. And as a technology evolution, that means that they're less able to be effective as products get more sophisticated, harder to assemble and as wages go up at a fast rate of productivity. So, I think that's just a great underlying trend that isn't going away and has a long way to go. So, I think you're seeing that. I think another factor you're seeing is, every year, there is new, very exciting and pretty difficult to implement technology coming into the electronics market whether it's OLEDs, displays, and technology as you referred to or other new technologies around areas like facial recognitions and 3D sensors, new cameras, new sensors; a range of new things. Generally we've seen that continue. So, I am – I think those kind of underlying factors have a long way to run for the industry and the difficulty of getting them into production where Cognex is the best machine vision partner in the world to make that happen. And you point to OLED, I would say that's relatively early on in terms of technology, it's maturation. I think we're just seeing its capacity kind of maxed out at the moment just in the smartphone market but I think the technology itself has huge potential to scale up over multiple years and find its way into all kinds of other markets; automotive, real estate and offices might be other examples where the technology is going to come. So, we think we have really sustainable and value book competitive advantage to offer companies in that space. So, I would say that's kind of our overall picture what I – this sort of perhaps some of the challenges that you were looking and try to forecast our business in that spaces to what degree the investment cycles kind of kick in and win some of the major capital in lines are deployed. So, I think that may impact short-term quarterly kind of or even annual revenue cycles, but I think over the long-term, it's very, very positive for Cognex.
Joseph Giordano - Cowen & Co. LLC: That's really helpful. And maybe if I could just sneak one quick one here for John. When I look at your operating margin, I feel your 42% on a huge quarter obviously, getting to the benefit there but what kind of run rate of like your base business do you think we have to get to start seeing a real move from like a 30-ish percent rate to like a more sustainable rate closer to 40% as you kind of you scale the business and you can leverage SG&A and R&D, notwithstanding the investments you're making right now but more on a longer term basis?