out of hand

1. not controlled

• Our use of credit cards was out of hand for a while, but then we just stopped using them and paid cash.

Usage notes: often used in the form got out of hand:

• The party got out of hand, and neighbors called the police.

2. without any more thought

• They were forced to do the sort of work that anyone who wasn't a prisoner would have rejected out of hand.

Usage notes: often used in the form dismissed out of hand:

• My idea was dismissed out of hand.

... Cambridge Dictionary of American Idioms,

http://idioms.thefreedictionary.com/out+of+hand