Window Position Makes Applications Open Off-Screen | Mavericks
I have found that you can move the app window if you position the mouse over the edge to get the horizontal or vertical resize arrows.  The trick is to move the mouse horizontally if you have the vertical resize arrows or vertically if you have the horizontal resize arrows.  It is a bit tricky, but it works on Mavericks 10.9.x  This trick does not work with the diagonal resize arrows.  The trick works better if you get the resize arrows the furthest away from the window without turning back into a normal pointer.  You can practice this trick on any window, off screen or not.