Other intangible assets as of and consisted primarily of the fair value of identifiable assets acquired in business combinations other than tangible assets and goodwill. The gross amount and accumulated amortization of the Company's other intangible assets as of and the amortization expense for the and -month periods ended and and the classification of such amortization expense within the accompanying unaudited condensed consolidated statements of income are as follows (in thousands):

 

																		Amortization Expense
		Gross Amount								Accumulated Amortization								Three-Month Periods Ended								Six-Month Periods Ended
		September 27,				March 29,				September 27,				March 29,				September 27,				September 29,				September 27,				September 29,
		2020				2020				2020				2020				2020				2019				2020				2019
Tradename and trademarks		$	3,667			$	3,667			$	1,869			$	1,747			$	61			$	61			$	122			$	122
Developed technology			1,100				1,100				348				293				27				27				55				55
Non-compete covenants			458				458				318				278				20				19				40				39
Patents			1,601				1,601				924				889				13				27				35				54
Customer relationships			7,374				7,374				5,567				5,416				73				79				151				157
Total other intangible assets		$	14,200			$	14,200			$	9,026			$	8,623			$	194			$	213			$	403			$	427
Classification within the accompanying unaudited condensed consolidated statements of income:
Cost of products sold																		$	1			$	1			$	3			$	3
Marketing and administrative expenses																			193				212				400				424
Total amortization expense																		$	194			$	213			$	403			$	427