Borrowings Under Credit Facilities and Related Items (Tables)

3 Months Ended

Mar. 31, 2015

Borrowings Under Credit Facilities and Related Items (Tables) [Abstract]

Aggregate borrowings under the unsecured line of credit arrangements

		Three Months Ended March 31,
		2015		2014
Balance outstanding at quarter end(1)		$	410,000	$	562,000
Maximum amount outstanding at any month end		$	430,000	$	562,000
Average amount outstanding (total of daily
	principal balances divided by days in period)	$	408,944	$	286,889
Weighted average interest rate (actual interest
	expense divided by average borrowings outstanding)		1.21%		1.34%
(1) As of March 31, 2015, letters of credit in the aggregate amount of $65,335,000 have been issued, which reduces the borrowing capacity on the unsecured revolving credit facility.