Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at Jun. 30, 2019	$ 392,845	$ 1,846	$ 59,560	$ 374,668	$ (43,229)
Balance (in shares) at Jun. 30, 2019		18,462,000
Options exercised	29	$ 1	28
Options exercised (in shares)		10,000
Conversion of restricted stock units		$ 4	(4)
Conversion of restricted stock units (in shares)		34,000
Stock-based compensation	1,703	$ 1	1,702
Stock-based compensation (in shares)		4,000
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions	(100)	$ (1)	(99)
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions (in shares)		(5,000)
Other comprehensive income, net of tax	(3,119)				(3,119)
Net income (loss)	4,121			4,121
Balance at Dec. 29, 2019	395,479	$ 1,851	61,187	378,789	(46,348)
Balance (in shares) at Dec. 29, 2019		18,505,000
Balance at Sep. 29, 2019	390,007	$ 1,849	59,663	378,380	(49,885)
Balance (in shares) at Sep. 29, 2019		18,490,000
Conversion of restricted stock units		$ 2	(2)
Conversion of restricted stock units (in shares)		16,000
Stock-based compensation	1,582	$ 1	1,581
Stock-based compensation (in shares)		4,000
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions	(56)	$ (1)	(55)
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions (in shares)		(5,000)
Other comprehensive income, net of tax	3,537				3,537
Net income (loss)	409			409
Balance at Dec. 29, 2019	395,479	$ 1,851	61,187	378,789	(46,348)
Balance (in shares) at Dec. 29, 2019		18,505,000
Balance at Jun. 28, 2020	$ 316,155	$ 1,845	62,392	315,724	(63,806)
Balance (in shares) at Jun. 28, 2020	18,446,436	18,446,000
Options exercised (in shares)		1,000
Conversion of restricted stock units		$ 4	(4)
Conversion of restricted stock units (in shares)		38,000
Stock-based compensation	$ 1,648		1,648
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions	(65)	$ (1)	(64)
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions (in shares)		(4,000)
Other comprehensive income, net of tax	6,239				6,239
Net income (loss)	10,896			10,896
Balance at Dec. 27, 2020	$ 334,873	$ 1,848	63,972	326,620	(57,567)
Balance (in shares) at Dec. 27, 2020	18,480,750	18,481,000
Balance at Sep. 27, 2020	$ 320,077	$ 1,845	62,810	319,156	(63,734)
Balance (in shares) at Sep. 27, 2020		18,447,000
Options exercised (in shares)		1,000
Conversion of restricted stock units		$ 4	(4)
Conversion of restricted stock units (in shares)		36,000
Stock-based compensation	1,223		1,223
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions	(58)	$ (1)	(57)
Common stock withheld in satisfaction of tax withholding obligations under net share settle transactions (in shares)		(3,000)
Other comprehensive income, net of tax	6,167				6,167
Net income (loss)	7,464			7,464
Balance at Dec. 27, 2020	$ 334,873	$ 1,848	$ 63,972	$ 326,620	$ (57,567)
Balance (in shares) at Dec. 27, 2020	18,480,750	18,481,000