Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jan. 02, 2015	Oct. 03, 2014	Dec. 27, 2013
Current assets:
Cash and cash equivalents	$ 57,553	$ 70,793	$ 45,944
Accounts receivable, net	57,254us-gaap_AccountsReceivableNetCurrent	44,452us-gaap_AccountsReceivableNetCurrent	62,982us-gaap_AccountsReceivableNetCurrent
Inventories	82,429us-gaap_InventoryNet	66,341us-gaap_InventoryNet	87,653us-gaap_InventoryNet
Deferred income taxes	8,305us-gaap_DeferredTaxAssetsNetCurrent	8,360us-gaap_DeferredTaxAssetsNetCurrent	8,598us-gaap_DeferredTaxAssetsNetCurrent
Other current assets	10,692us-gaap_OtherAssetsCurrent	7,604us-gaap_OtherAssetsCurrent	6,018us-gaap_OtherAssetsCurrent
Total current assets	216,233us-gaap_AssetsCurrent	197,550us-gaap_AssetsCurrent	211,195us-gaap_AssetsCurrent
Property, plant and equipment, net of accumulated depreciation of $109,915, $108,668 and $105,031, respectively	45,130us-gaap_PropertyPlantAndEquipmentNet	46,100us-gaap_PropertyPlantAndEquipmentNet	44,443us-gaap_PropertyPlantAndEquipmentNet
Deferred income taxes	4,695us-gaap_DeferredTaxAssetsNetNoncurrent	5,353us-gaap_DeferredTaxAssetsNetNoncurrent	7,955us-gaap_DeferredTaxAssetsNetNoncurrent
Goodwill	14,295us-gaap_Goodwill	14,416us-gaap_Goodwill	21,036us-gaap_Goodwill
Other intangible assets, net	12,297	12,518	14,987
Other assets	13,271us-gaap_OtherAssetsNoncurrent	12,689us-gaap_OtherAssetsNoncurrent	13,270us-gaap_OtherAssetsNoncurrent
Total assets	305,921us-gaap_Assets	288,626us-gaap_Assets	312,886us-gaap_Assets
Current liabilities:
Short-term debt
Current maturities of long term debt	354us-gaap_LongTermDebtCurrent	360us-gaap_LongTermDebtCurrent	470us-gaap_LongTermDebtCurrent
Accounts payable	33,239us-gaap_AccountsPayableCurrent	27,896us-gaap_AccountsPayableCurrent	30,163us-gaap_AccountsPayableCurrent
Accrued liabilities:
Salaries, wages and benefits	10,887	14,780	11,808
Accrued warranty	3,539us-gaap_ProductWarrantyAccrual	4,078us-gaap_ProductWarrantyAccrual	4,439us-gaap_ProductWarrantyAccrual
Income taxes payable	343us-gaap_AccruedIncomeTaxesCurrent	833us-gaap_AccruedIncomeTaxesCurrent	994us-gaap_AccruedIncomeTaxesCurrent
Other	12,862us-gaap_OtherLiabilitiesCurrent	12,285us-gaap_OtherLiabilitiesCurrent	12,511us-gaap_OtherLiabilitiesCurrent
Total current liabilities	61,224us-gaap_LiabilitiesCurrent	60,232us-gaap_LiabilitiesCurrent	60,385us-gaap_LiabilitiesCurrent
Long-term debt, less current maturities	32,082us-gaap_LongTermDebtNoncurrent	7,431us-gaap_LongTermDebtNoncurrent	37,960us-gaap_LongTermDebtNoncurrent
Deferred income taxes	1,327	1,133	1,112
Retirement benefits	8,626	7,804	6,245
Other liabilities	13,164us-gaap_OtherLiabilitiesNoncurrent	13,568us-gaap_OtherLiabilitiesNoncurrent	13,161us-gaap_OtherLiabilitiesNoncurrent
Total liabilities	116,423us-gaap_Liabilities	90,168us-gaap_Liabilities	118,863us-gaap_Liabilities
Shareholders' equity:
Preferred stock: none issued
Common stock:
Capital in excess of par value	67,828us-gaap_AdditionalPaidInCapital	67,882us-gaap_AdditionalPaidInCapital	65,810us-gaap_AdditionalPaidInCapital
Retained earnings	112,637	117,573	108,476
Accumulated other comprehensive income	9,309	12,778	19,594
Treasury stock at cost, shares of Class A common stock: 28,118, 11,203 and 14,511, respectively	(776)us-gaap_TreasuryStockValue	(275)us-gaap_TreasuryStockValue	(356)us-gaap_TreasuryStockValue
Total shareholders' equity	189,498us-gaap_StockholdersEquity	198,458us-gaap_StockholdersEquity	194,023us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	305,921	288,626	312,886
Class A [Member]
Common stock:
Shares issued and outstanding	439	439	438
Class B [Member]
Common stock:
Shares issued and outstanding	$ 61	$ 61	$ 61

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).