Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2012

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, 2011 Fair Value Measurements at Reporting Date Using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash and money market funds	$	60,062	$	—	$	—	$	60,062
Pension plan assets		30,815		118,116		—		148,931
Total fair value	$	90,877	$	118,116	$	—	$	208,993

	September 30, 2012 Fair Value Measurements at Reporting Date Using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash and money market funds	$	46,740	$	—	$	—	$	46,740
Pension plan assets		38,562		143,449		—		182,011
Total fair value	$	85,302	$	143,449	$	—	$	228,751