That symbol means that you sent the bitcoin to yourself, i.e. the key for the destination address 1NqJgMT4eLPycaD2i7T7xzbd9F9fycWE9u is also in your wallet. Is your wallet fully synced? Because there was another transaction showing the subsequent spending of the coins, which is not in your screenshot.
It looks like maybe you imported the key for this address after the coins had already been spent from it?