Notes Payable (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Components of Notes Payable

Notes payable consists of the following:

(in thousands)	December 31,
	2021			2020
Unsecured revolving lines of credit	$	266,500		$	122,771
3.68% Series B senior notes due in 2021		—			40,000
3.84% Series C senior notes due in 2022		60,000			60,000
2.35% Series E senior notes due in 2026		60,000			—
2.57% Series D senior notes due in 2028		40,000			—
		426,500			222,771
Unamortized debt issuance cost		(49	)		(17	)
	$	426,451		$	222,754

Schedule of Future Minimum Payments under Unsecured Revolving Lines of Credit 3.84% Senior Notes, 2.35% Senior Notes and 2.57% Senior Notes

As of December 31, 2021, the future minimum payments under the unsecured revolving lines of credit,  3.84% Series C senior notes, 2.35% Series E senior notes, and 2.57% Series D senior notes due in 2022, 2026 and 2028, respectively, are as follows:

(in thousands)
Year Ended December 31,
2022	$	60,000
2023		—
2024		—
2025		266,500
2026		60,000
Thereafter		40,000
	$	426,500

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,
	2021			2020
Maximum amount outstanding	$	389,740		$	199,471
Average amount outstanding	$	239,134		$	170,075
Weighted average interest rate, during the period		2.07	%		2.11	%
Prime interest rate, end of period		3.25	%		3.25	%