I worked for this co. at one time. Again, look what insiders are doing, as soon as they get shares they are selling, they have no faith or reason to believe that this stock or co. is going anywhere. They are dumping. So, what does that tell you. That's right-overvalued.
I would expect that freight costs have become a significant issue, a cost that may not as yet been passed on, but thats all I can think of. Could just be a general market adjustment in stock prices across the board in preparation of slower growth.