Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2017

Summary of Significant Accounting Policies

Summary of intangible assets

	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

	Gross		Accumulated		Carrying
September 30, 2017	Amount		Amortization		Amount
Patents	$	4,030	$	(3,656)	$	374
Trademarks		3,800		—		3,800
Customer relationships		2,100		(426)		1,674
Other		291		(73)		218
	$	10,221	$	(4,155)	$	6,066

Schedule of estimated future aggregate amortization expense

Estimated future Aggregate Amortization Expense:
Year Ended September 30,
2018	$	527
2019		256
2020		198
2021		180
2022		133
Thereafter		972

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)	2015			2016			2017
Numerator: Basic and Diluted
Net income (loss)	$	30,486		$	5,020		$	(10,190)
Dividends paid		(10,952)			(10,988)			(11,009)
Undistributed income (loss)		19,534			(5,968)			(21,199)
Percentage allocated to common shares (a)		99.1	%		99.0	%		100.0	%
Undistributed income (loss) allocated to common shares		19,358			(5,910)			(21,199)
Dividends paid on common shares outstanding		10,853			10,881			10,905
Net income (loss) available to common shares		30,211			4,971			(10,294)
Denominator: Basic and Diluted
Weighted average common shares outstanding		12,331,805			12,361,483			12,397,099
Adjustment for dilutive potential common shares		12,404			4,714			—
Weighted average shares outstanding - Diluted		12,344,209			12,366,197			12,397,099
Basic net income (loss) per share	$	2.45		$	0.40		$	(0.83)
Diluted net income (loss) per share	$	2.45		$	0.40		$	(0.83)
Number of stock option shares excluded as their effect would be anti-dilutive		289,130			378,852			310,417
Number of restrictive stock shares excluded as their effect would be anti-dilutive		111,450			121,285			107,854
(a) Percentage allocated to common shares - weighted average
Common shares outstanding		12,331,805			12,361,483			12,397,099
Unvested participating shares		112,275			121,185			—
		12,444,080			12,482,668			12,397,099