Heads up with an overpair.

Villian is very tight passive. For the past six hands Ive just taken the blinds from him. He checked down trips with a bet on the flop during the six man game earlier.

Holdem No Limit $1/$2
: Seat 7 : tomeejay has $325.52
: Seat 8 : HappyJones has $216.75
: HappyJones is the dealer.
: HappyJones posted small blind.
: tomeejay posted big blind.
: Game [102407] started with 2 players.
: Dealing Hole Cards.
: Seat 8 : HappyJones has [Kc Kh]
: HappyJones called $1 and raised $4
: tomeejay called $4
: Dealing flop.
: Board cards [6d 7d Jc]
: tomeejay checked.
: HappyJones bet $7
: tomeejay called $7 and raised $7
HappyJones ???

Im wondering am I looking for value here with a possible call or do I want to reraise and end the hand? If so how much?