Credit Facilities, Short-term Borrowings and Long-term Debt (Tables)

6 Months Ended

Mar. 31, 2017

Debt Disclosure

Schedule of Long-term Debt

	March 31,		September 30,
	2017		2016
Revolving credit facility - Floating rate (LIBOR plus 0.85% - 1.65%), due April 2020, unsecured	$	134,300	$	156,700
Series D notes – 6.39%, due October 2018; unsecured		100,000		100,000
Series F notes – 8.24%, due April 2019; unsecured		43,000		43,000
Series G notes – 3.42%, due November 2020; unsecured		50,000		50,000
Series H notes – 4.03%, due November 2023; unsecured		25,000		25,000
Series I notes – 4.18%, due November 2025; unsecured		25,000		25,000
Series J notes – Floating rate (LIBOR plus 1.25%), due November 2020; unsecured		50,000		50,000
Series K notes – 4.03%, due November 2023; unsecured		50,000		50,000
Series L notes – 4.18%, due November 2025; unsecured		50,000		50,000
Series M notes – 1.12% due September 2026; unsecured		42,735		44,886
Series N notes – 1.31% due September 2028; unsecured		82,265		86,406
Series O notes – 1.57% due September 2031; unsecured		45,941		48,252
Total debt		698,241		729,244
Less: Current portion of long-term debt		(134,300)		(150,000)
Unamortized debt issuance costs		(1,896)		(2,091)
Long-term debt, less current portion	$	562,045	$	577,153