AKos- Should I have gotten off of this?

[krazyace5]

This is against an 83/35 donk. To aggressive by me or just bad luck? Is my reraise preflop too small? Has anyone seen my game?

PokerStars No-Limit Hold'em, $1.00 BB (5 handed) FTR converter on zerodivide.cx

UTG ($146.35)
MP ($99.30)
Button ($341)
SB ($117.55)
Hero ($156.35)

Preflop: Hero is BB with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Button raises to $4</font>, SB calls $3.50, <font color="#CC3333">Hero raises to $12</font>, Button folds, SB calls $8.

Flop: ($28) 7[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $24</font>, <font color="#CC3333">SB raises to $48</font>, Hero calls $24.

Turn: ($124) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $55</font>, <font color="#CC3333">SB raises to $57.55</font>, Hero calls $2.55.

River: ($239.10) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: $239.10

Results in white below: <font color="#FFFFFF">
SB has 7h 4c (three of a kind, sevens).
Hero has Ac Ks (two pair, aces and sevens).
Outcome: SB wins $239.10. </font>