Borrowings Under Credit Facilities and Related Items (Tables)

3 Months Ended

Mar. 31, 2018

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

Aggregate borrowings under the unsecured line of credit arrangements

		Three Months Ended March 31,
		2018		2017
Balance outstanding at quarter end(1)		$	865,000	$	522,000
Maximum amount outstanding at any month end		$	865,000	$	1,010,000
Average amount outstanding (total of daily
	principal balances divided by days in period)	$	364,111	$	796,356
Weighted average interest rate (actual interest
	expense divided by average borrowings outstanding)		2.72%		1.81%
(1) As of March 31, 2018, letters of credit in the aggregate amount of $22,365,000 have been issued, which reduces the borrowing capacity on the unsecured revolving credit facility.