Borrowings Under Line of Credit Arrangements and Related Items (Tables)

3 Months Ended

Mar. 31, 2012

Borrowings Under Line of Credit Arrangement and Related Items (Tables) [Abstract]

Aggregate borrowings under the unsecured line of credit arrangements

		Three Months Ended March 31,
		2012		2011
Balance outstanding at quarter end		$	5,000	$	0
Maximum amount outstanding at any month end		$	897,000	$	495,000
Average amount outstanding (total of daily
	principal balances divided by days in period)	$	480,703	$	319,222
Weighted average interest rate (actual interest
	expense divided by average borrowings outstanding)		1.65%		1.59%