Close Value bets?

[Noo Yawk]

20-40 game, 10 handed, on the passive side.
Two very poor players limp in, which they would do with just about any two. Its also important to note that they don't bet or raise their hands unless its the nuts, but will also call with very little.
I raise with Q-10o. All behind me fold. 3 to the flop.

the flop is 9-10-K rainbow
they check, I bet, they call.

The turn: 5(9-10-K) they check, I bet they call..

River: A (5-9-10-K) They check, I bet, they call.
MHIG.
I'm still wondering if this was a bit on the thin side. It didn't feel like it at the time, but as I got to thinking....