Notes Payable (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Components of Notes Payable

Notes payable consists of the following:

(in thousands)	December 31,
	2016		2015
Unsecured revolving lines of credit	$	186,376	$	221,441
4.03% Series A senior notes due in 2018		40,000		60,000
3.68% Series B senior notes due in 2021		40,000		40,000
3.84% Series C senior notes due in 2022		60,000		60,000
	$	326,376	$	381,441

Schedule of Future Minimum Payments under Unsecured Revolving Lines of Credit and 4.03% Senior Notes, 3.68% Senior Notes and 3.84% Senior Notes

As of December 31, 2016, the future minimum payments under the unsecured revolving lines of credit, 4.03% Series A senior notes due in 2018, 3.68% Series B senior notes due in 2021 and 3.84% Series C senior notes due in 2022 are as follows:

(in thousands)
Year Ended December 31,
2017	$	20,000
2018		20,000
2019		—
2020		—
2021		226,376
2022 and thereafter		60,000
	$	326,376

Schedule of Information Related to Lines of Credit

The following information relates to the lines of credit for each of the following periods:

(dollar amounts in thousands)	Year Ended December 31,
	2016			2015
Maximum amount outstanding	$	239,820		$	295,588
Average amount outstanding	$	214,446		$	236,860
Weighted average interest rate, during the period		2.19	%		2.35	%
Prime interest rate, end of period		3.75	%		3.50	%