Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2012

Summary of Significant Accounting Policies

Summary of intangible assets

September 30, 2011	Gross Amount		Accumulated Amortization			Carrying Amount
Patents	$	8,667	$	(6,612	)	$	2,055
Trademarks		3,800		—			3,800
Non-compete		1,090		(820	)		270
Other		646		(331	)		315
	$	14,203	$	(7,763	)	$	6,440

September 30, 2012	Gross Amount		Accumulated Amortization			Carrying Amount
Patents	$	8,667	$	(6,891	)	$	1,776
Trademarks		3,800		—			3,800
Non-compete		1,090		(900	)		190
Other		330		(79	)		251
	$	13,887	$	(7,870	)	$	6,017

Schedule of estimate of aggregate amortization expense

Estimate of Aggregate Amortization Expense: Year Ended September 30,
2013	416
2014	416
2015	393
2016	332
2017	279

Schedule of estimated economic useful lives of property, plant and equipment

Building and improvements	40 years
Machinery and equipment	5–14 years
Office equipment and computer software	3–10 years
Land improvements	20 years

Schedule of basic and diluted net income (loss) per share

	Years ended September 30,
(in thousands, except share and per share data)	2010		2011			2012
Numerator:
Net income	$	8,875	$	31,128		$	50,182
Less amount allocable to participating securities		—		(320	)		(454	)
Net income available for basic shareholders		8,875		30,808			49,728
Adjustment for dilutive potential common shares		—		(2	)		2
Net income available for diluted common shares	$	8,875	$	30,806		$	49,730
Denominator:
Weighted average shares—Basic		12,049,779		12,067,555			12,147,179
Adjustment for dilutive potential common shares		109,750		82,311			68,852
Weighted average shares—Diluted		12,159,529		12,149,866			12,216,031
Basic net income per share	$	0.74	$	2.55		$	4.09
Diluted net income per share	$	0.73	$	2.54		$	4.07
Number of stock option shares excluded as their effect would be anti-dilutive		216,224		130,195			98,630

Schedule of comprehensive income (loss)

	Year Ended September 30,
	2010								2011								2012
	Pre-tax			Tax		Net			Pre-tax			Tax		Net			Pre-tax			Tax		Net
Net income						$	8,875							$	31,128							$	50,182
Other comprehensive income (loss):
Pension and postretirement	$	(20,935	)	$	7,893		(13,042	)	$	(28,326	)	$	10,670		(17,656	)	$	(26,537	)	$	9,796		(16,741	)
Foreign currency translation adjustment		(539	)		—		(539	)		645			—		645			698			—		698
Other comprehensive income (loss)	$	(21,474	)	$	7,893	$	(13,581	)	$	(27,681	)	$	10,670		(17,011	)	$	(25,839	)	$	9,796		(16,043	)
Total comprehensive income (loss)						$	(4,706	)						$	14,117							$	34,139

Schedule of accumulated other comprehensive loss

	Accumulated Other Comprehensive Loss at September 30, 2011			Other Comprehensive Loss for the year ended September 30, 2012			Accumulated Other Comprehensive Loss at September 30, 2012
Foreign Currency Translation Adjustment	$	251		$	698		$	949
Pension and Postretirement, including curtailment		(83,299	)		(16,741	)		(100,040	)
	$	(83,048	)	$	(16,043	)	$	(99,091	)