Why did GOP Congressman Adrian Smith (R-NE-03) pay his father $141,666 out of his campaign money?

Smith Watch reports that FEC filings show that new GOP Congressman Adrian Smith (R-NE-03) paid his dad $141,666 out of campaign funds for "payroll processing." Dad sells insurance. So what exactly did dad do for the campaign that he was paid $141,666? That's an awful lot of money in Nebraska - hell, it's an awful lot of money in DC.

Looking at the FEC Web site, and at the electronic filings, this is how the $141,000 breaks down as direct payments to Smith's Dad:

In-Kind: Birthday Invitations: $219.35
In-Kind: Flight for two: $497.58
In-Kind: Office Space: $2525.00
Debt Repayment: $22,055.54
Payroll Processing: $116, 389.38

Any campaign finance experts out there want to weigh in on whether this is as odd as it seems, or just standard practice?