Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2016

Fair Value Measurements

Schedule of company's fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis

	September 30, 2015 Fair Value Measurements
	at Reporting Date Using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	49,045	$	—	$	—	$	49,045
Pension plan assets		71,051		134,447		—		205,498
Total fair value	$	120,096	$	134,447	$	—	$	254,543

	September 30, 2016 Fair Value Measurements
	at Reporting Date Using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	64,743	$	—	$	—	$	64,743
Pension plan assets		73,794		134,169		—		207,963
Total fair value	$	138,537	$	134,169	$	—	$	272,706