I'm going to turn the clock back to when the government decided to go full accrual accounting. Up until then the allowance for doubtful accounts was almost like a memo entry in our books, because the government was accounting on a cash basis. The allowance of doubtful accounts...I think the first one was done in 2002, and it was quite a challenge to start investing time and effort to evaluate the collectibility of those accounts. The OAG reviews that methodology every year, and they pass judgment on the accuracy of that estimate.
We don't have a long track record of managing the allowance for doubtful accounts in a very proactive manner. It's a question of priority for us, and we're devoting a lot of time and attention to making sure the value is accurate.