IDI [IDI] SC 13D/A: CUSIP No. 44938L108 2 6 Page 1. NAMES
[CUSIP No. 44938L108 2 6 Page 1. NAMES OF REPORTING PERSONS Phillip Frost, M.D. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) x ¨ (a) 3. SEC USE ONLY 4. SOURCE OF FUNDS (see instructions) N/A 5. ¨]