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Fair Value Measurements
9 Months Ended
Jun. 30, 2018
Fair Value Disclosures [Abstract]  
Fair Value Measurement
Fair Value Measurements
As of September 30, 2017 and June 30, 2018, the fair values of cash and cash equivalents, accounts receivable and accounts payable approximate carrying values due to the short maturity of these items.
The Company measures the fair value of pension plan assets and liabilities, deferred compensation plan assets and liabilities on a recurring basis pursuant to ASC Topic 820. ASC Topic 820 establishes a three‑tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include:
Level 1: Quoted prices for identical instruments in active markets.
Level 2: Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model‑derived valuations whose inputs are observable or whose significant value driver is observable.
Level 3: Unobservable inputs in which little or no market data is available, therefore requiring an entity to develop its own assumptions.
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
)
 
—


The pension plan assets and liabilities and deferred compensation plan assets and liabilities are included in other non-current assets and other non-current liabilities at September 30, 2017 and June 30, 2018.