Please help me how to withdraw my Eth in EtherDelta. I want to withdraw my 0.137 ETH there but the system keep saying

"Insufficient funds. The account you tried to send transaction from does not have enough funds. Required 138263456000000000 and got: 7316960000000000.

I have 0.00731696 Ether balance in my MEW but i cant withdraw. How much do i need balance in MEW to withdraw my 0.137 eth in EtherDelta?