Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents the Company’s financial assets and liabilities at fair value. The fair values related to the pension plan assets are determined using net asset value (NAV) as a practical expedient, or by information categorized in the fair value hierarchy level based on the inputs used to determine fair value. The reported carrying amounts of deferred compensation plan assets and liabilities and debt approximate their fair values. The Company uses interest rates and other relevant information generated by market transactions involving similar instruments to fair value these assets and liabilities, therefore all are classified as Level 2 within the valuation hierarchy.

	Net Asset Value		Quoted Market Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of September 30, 2017
Assets:
Pension plan
Cash	$	—	$	16,024	$	—		$	—
Government Securities	3,206		—		—			—
Liability Driven Investment	2,754		—		—			—
Guernsey Unit Trust	932		—		—			—
Global Absolute Return	2,139		—		—			—
Deferred compensation plan assets
Trust Assets	—		2,146		—			—
Insurance	—		—		17,396			—
Liabilities:
Pension plan	—		—		(34,803		)	—
Deferred compensation plan liabilities	—		—		(21,159		)	—
Long‑term debt	—		—		(912,471		)	—
As of June 30, 2018
Assets:
Pension plan
Cash	$	—	$	15,703	$	—		$	—
Government Securities	2,938		—		—			—
Liability Driven Investment	3,245		—		—			—
Guernsey Unit Trust	948		—		—			—
Global Absolute Return	2,058		—		—			—
Deferred compensation plan assets
Trust Assets	—		766		—			—
Insurance	—		—		18,029			—
Liabilities:
Pension plan	—		—		(34,162		)	—
Deferred compensation plan liabilities	—		—		(21,267		)	—
Long‑term debt	—		—		(798,662		)	—