I don't read it as they will take the money from your account. Instead, I understand it as they will reduce any of your future payments by some amount until the State is repaid for the overpayment. I used to work for a support enforcement agency and they would take 10% off of every payment until the repayment happened. It really is the easiest way to do it rather than you write a lump sum check back.
"Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind." -- Theodor Seuss Geisel