ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Changes by Component) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 243,004
Other comprehensive income (loss) before reclassifications	$ 505	$ 874	229	$ (2,873)
Amounts reclassified from accumulated other comprehensive income	(2,169)	141	(1,986)	283
Tax effects	(44)	(54)	(88)	(108)
Ending balance	261,245	221,324	261,245	221,324
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	10,903	6,778	11,179	10,525
Other comprehensive income (loss) before reclassifications	505	874	229	(2,873)
Amounts reclassified from accumulated other comprehensive income	(2,351)	0	(2,351)	0
Tax effects	0	0	0	0
Ending balance	9,057	7,652	9,057	7,652
Unamortized Loss on Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(6,047)	(8,083)	(6,186)	(8,171)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	182	141	365	283
Tax effects	(44)	(54)	(88)	(108)
Ending balance	(5,909)	(7,996)	(5,909)	(7,996)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	4,856	(1,305)	4,993	2,354
Ending balance	$ 3,148	$ (344)	$ 3,148	$ (344)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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Amount before tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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