CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS - USD ($)	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Revenues:
Revenues	$ 6,139,332	$ 5,126,330	$ 20,792,390	$ 16,723,848
Expenses:
Research and development	2,389,573	4,599,266	10,686,491	13,577,075
Selling, general and administration	5,130,019	7,166,137	16,788,493	21,011,050
Goodwill, Impairment Loss	331,344		331,344
Total expenses	12,540,880	15,425,203	43,615,863	45,807,866
Loss from operations	(6,401,548)	(10,298,873)	(22,823,473)	(29,084,018)
Other income (expense):
Interest income	120,645	160,875	438,316	486,239
Other (expense) income	(109,614)	241,466	(330,821)	1,360,822
Foreign currency transaction (losses) gains	(88,847)	(227,447)	(36,320)	(254,615)
Gain on investments	0	0	768,000	2,849,816
Total other income and expense	(77,816)	174,894	839,175	4,442,262
Loss before provision for income taxes and net (income) loss attributable to noncontrolling interest	(6,479,364)	(10,123,979)	(21,984,298)	(24,641,756)
Provision for income taxes	(26,000)	316,000	(78,000)	115,000
Net loss	(6,505,364)	(9,807,979)	(22,062,298)	(24,526,756)
Net (income) loss attributable to noncontrolling interest	(120,094)	16,596	(154,478)	(41,862)
Net loss attributable to Kopin Corporation	$ (6,625,458)	$ (9,791,383)	$ (22,216,776)	$ (24,568,618)
Net loss per share
Basic and diluted (usd per share)	$ (0.08)	$ (0.13)	$ (0.28)	$ (0.34)
Weighted average number of common shares outstanding
Basic and diluted (in shares)	82,053,698	73,135,253	79,657,677	73,102,979
Product [Member]
Revenues:
Revenues	$ 4,955,062	$ 3,643,619	$ 14,004,319	$ 13,160,507
Expenses:
Cost of Goods and Services Sold	4,689,944	3,659,800	15,809,535	11,219,741
Service [Member]
Revenues:
Revenues	$ 1,184,270	$ 1,482,711	$ 6,788,071	$ 3,563,341