CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2018	Dec. 30, 2017
Current assets:
Cash and cash equivalents	$ 22,742,575	$ 24,848,227
Marketable debt securities, at fair value	30,681,129	43,907,457
Accounts receivable, net of allowance of $353,000 in 2018 and $149,000 in 2017	2,785,081	3,955,123
Contract with Customer, Asset, Net	2,384,307	704,863
Inventory	4,257,702	5,080,797
Prepaid taxes	96,983	264,352
Prepaid expenses and other current assets	1,177,022	978,677
Total current assets	64,124,799	79,739,496
Property, plant and equipment, net	5,125,629	5,077,043
Goodwill	1,768,539	1,780,247
Finite-Lived Intangible Assets, Net	441,818	883,636
Other assets	2,173,428	3,842,068
Financial Instruments, Owned, at Fair Value	5,708,816	0
Total assets	79,343,029	91,322,490
Current liabilities:
Accounts payable	3,894,049	4,918,605
Accrued payroll and expenses	1,722,559	1,636,512
Accrued warranty	615,000	649,000
Contract with Customer, Liability	317,094	896,479
Other accrued liabilities	1,716,612	2,066,025
Income tax payable	161,620	1,416,892
Deferred tax liabilities	863,000	520,000
Total current liabilities	9,289,934	12,103,513
Deferred Revenue, Noncurrent	153,844	374,171
Asset retirement obligations	264,238	269,877
Liabilities, Other than Long-term Debt, Noncurrent	1,785,775	1,195,082
Stockholders’ equity:
Preferred stock, par value $.01 per share: authorized, 3,000 shares; none issued	0	0
Common stock, par value $.01 per share: authorized, 120,000,000 shares; issued 81,090,758 shares in 2018 and 80,201,313 shares in 2017; outstanding 73,135,253 shares in 2018 and 73,078,783 shares in 2017	776,485	775,720
Additional paid-in capital	333,794,962	331,119,340
Treasury stock (4,513,256 shares in 2018 and 2017, at cost)	(17,238,669)	(17,238,669)
Accumulated other comprehensive income	3,046,191	3,564,779
Accumulated deficit	(251,839,754)	(240,121,901)
Total Kopin Corporation stockholders’ equity	68,539,215	78,099,269
Noncontrolling interest	(689,977)	(719,422)
Total stockholders’ equity	67,849,238	77,379,847
Total liabilities and stockholders’ equity	$ 79,343,029	$ 91,322,490

Equity Investment, Fair Value

No definition available.

Name:	kopn_EquityInvestmentFairValue
Namespace Prefix:	kopn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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).