Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 30, 2016	Sep. 30, 2016	Jan. 01, 2016
Current assets:
Cash and cash equivalents	$ 51,860	$ 87,294	$ 49,356
Accounts receivable, net	72,349	41,522	66,057
Inventories	76,037	68,397	93,898
Other current assets	4,819	4,755	5,324
Total current assets	205,065	201,968	214,635
Property, plant and equipment, net of accumulated depreciation of $125,286, $123,921 and $119,171, respectively	48,544	48,998	45,296
Deferred income taxes	22,745	19,063	16,457
Goodwill	11,170	11,196	19,624
Other intangible assets, net	14,060	14,462	11,470
Other assets	14,883	14,592	13,992
Total assets	316,467	310,279	321,474
Current liabilities:
Current maturities of long-term debt		381	366
Accounts payable	32,033	24,521	35,055
Accrued liabilities:
Salaries, wages and benefits	12,171	17,396	11,398
Accrued warranty	4,781	4,326	4,258
Income taxes payable	1,055	1,691	2,953
Accrued discounts and returns	6,116	7,074	4,857
Other	12,159	12,265	11,181
Total current liabilities	68,315	67,654	70,068
Long-term debt, less current maturities	13,001	7,008	31,230
Deferred income taxes	1,147	1,216	1,161
Retirement benefits	12,527	12,699	9,979
Other liabilities	14,641	14,206	13,954
Total liabilities	109,631	102,783	126,392
Common stock:
Capital in excess of par value	71,554	71,127	69,751
Retained earnings	138,571	135,405	123,846
Accumulated other comprehensive income (loss)	(1,305)	2,354	1,956
Treasury stock at cost, shares of Class A common stock: 79,071, 64,323 and 37,015, respectively	(2,488)	(1,892)	(973)
Total shareholders' equity	206,836	207,496	195,082
Total liabilities and shareholders' equity	316,467	310,279	321,474
Class A [Member]
Common stock:
Shares issued and outstanding	443	441	441
Class B [Member]
Common stock:
Shares issued and outstanding	$ 61	$ 61	$ 61