Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2016

Summary of Significant Accounting Policies

Summary of intangible assets

	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

	Gross		Accumulated		Carrying
September 30, 2016	Amount		Amortization		Amount
Patents	$	4,030	$	(3,370)	$	660
Trademarks		3,800		—		3,800
Customer relationships		2,100		(275)		1,825
Other		291		(14)		277
	$	10,221	$	(3,659)	$	6,562

Schedule of estimated future aggregate amortization expense

Estimated future Aggregate Amortization Expense:
Year Ended September 30,
2017	526
2018	486
2019	304
2020	198
2021	194
Thereafter	1,054

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

Buildings and improvements			40	years
Machinery and equipment	5	—	14	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)	2014			2015			2016
Numerator: Basic and Diluted
Net income	$	3,751		$	30,486		$	5,020
Dividends paid		(10,906)			(10,952)			(10,988)
Undistributed income (loss)		(7,155)			19,534			(5,968)
Percentage allocated to common shares (a)		99.2	%		99.1	%		99.0	%
Undistributed income (loss) allocated to common shares		(7,098)			19,358			(5,910)
Dividends paid on common shares outstanding		10,819			10,853			10,881
Net income available to common shares		3,721			30,211			4,971
Denominator: Basic and Diluted
Weighted average common shares outstanding		12,291,881			12,331,805			12,361,483
Adjustment for dilutive potential common shares		29,819			12,404			4,714
Weighted average shares outstanding - Diluted		12,321,700			12,344,209			12,366,197
Basic net income per share	$	0.30		$	2.45		$	0.40
Diluted net income per share	$	0.30		$	2.45		$	0.40
Number of stock option shares excluded as their effect would be anti-dilutive		180,435			289,130			378,852
Number of restrictive stock shares excluded as their effect would be anti-dilutive		98,463			111,450			121,185
(a) Percentage allocated to common shares - weighted average
Common shares outstanding		12,291,881			12,331,805			12,361,483
Unvested participating shares		98,463			112,275			121,185
		12,390,344			12,444,080			12,482,668