Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2015

Summary of Significant Accounting Policies

Schedule Changes in the carrying value of goodwill

Goodwill at September 30, 2014	$	—
Goodwill acquired - Leveltek-LaPorte Assets		4,789
Adjustments		—
Goodwill at September 30, 2015	$	4,789

Summary of intangible assets

	Gross		Accumulated		Carrying
September 30, 2014	Amount		Amortization		Amount
Patents	$	4,030	$	(2,813)	$	1,217
Trademarks		3,800		—		3,800
Non-compete		500		(452)		48
Other		330		(210)		120
	$	8,660	$	(3,475)	$	5,185

	Gross		Accumulated		Carrying
September 30, 2015	Amount		Amortization		Amount
Patents	$	4,030	$	(3,091)	$	939
Trademarks		3,800		—		3,800
Customer relationships		2,100		(119)		1,981
Other		330		(276)		54
	$	10,260	$	(3,486)	$	6,774

Schedule of estimate of aggregate amortization expense

Estimate of Aggregate Amortization Expense:
Year Ended September 30,
2016	489
2017	431
2018	427
2019	246
2020	140
Thereafter	1,242

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 per share

	Years ended September 30,
(in thousands, except share and per share data)	2013			2014			2015
Numerator: Basic and Diluted
Net income	$	21,577		$	3,751		$	30,486
Dividends paid		(10,849)			(10,906)			(10,952)
Undistributed income (loss)		10,728			(7,155)			19,534
Percentage allocated to common shares		99.1	%		99.2	%		99.1	%
Undistributed income (loss) allocated to common shares		10,637			(7,098)			19,358
Dividends paid on common shares outstanding		10,754			10,819			10,853
Net income available to common shares		21,391			3,721			30,211
Denominator: Basic and Diluted
Weighted average common shares outstanding		12,223,838			12,291,881			12,331,805
Adjustment for dilutive potential common shares		41,792			29,819			12,404
Weighted average shares outstanding - Diluted		12,265,630			12,321,700			12,344,209
Basic net income per share	$	1.75		$	0.30		$	2.45
Diluted net income per share	$	1.74		$	0.30		$	2.45
Number of stock option shares excluded as their effect would be anti-dilutive		170,623			180,435			289,130
Number of restrictive stock shares excluded as their effect would be anti-dilutive		106,575			98,463			111,450
(a) Percentage allocated to common shares - weighted average
Common shares outstanding		12,223,838			12,291,881			12,331,805
Unvested participating shares		106,575			98,463			112,275
		12,330,413			12,390,344			12,444,080