Am I an idiot? (Pushing with nothing)

Beginner here so be foregiving please?

Blinds are 100/200 I'm in the BB with 2060 left. 148 left top 60 get paid.

utg+2 calls and has a little less than me left.

MP2 calls and has about 3500 left.

It is then folded around to me and I see 10 [img]/images/graemlins/spade.gif[/img] 3 [img]/images/graemlins/spade.gif[/img]

Previous to this players have been fairly loose and have been trying to limp in alot with crap hands yet still raising with the good ones. No loose calls have been made.

I am thinking that these guys may have a suited A or suited connectors or maybe J10 or something like that.

So anyway with the pot at 700 I decide to push. I figure this will still keep me above the danger zone and surely they can't call unless they have something decent in which case they would of raised and if thy miracously do call I am suited so i'm not a massive underdog right?

Bottom line is the first guy folds really quickly. The second guy thinks about it for a while and then calls turning over A 10 off (ouch that 10 hurt). Of course I make a four flush and that is the end of my tourney.

Even though folding was probably better, was my play that bad? Was his play bad? Should I have waited for a better spot. I was starting to run low on chips and I have been pretty tight so I figured I should get some respect.

Maybe I should of not gone all in but put in a moderate raise instead?

Could you guys please help me out on this hand?

Cheers