Debt (Narrative) (Details) - USD ($)			12 Months Ended
	Mar. 24, 2017	Dec. 21, 2016	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2017
Line of Credit Facility [Line Items]
Interest paid, capitalized or accrued			$ 82,000	$ 363,000
Unsecured Financing Arrangement With Largest Investor [Member]
Line of Credit Facility [Line Items]
Debt issuance costs					$ 158,000
Expiration date			Jun. 30, 2018
Amount of equity financing required by financing arrangement to be raised	$ 5,000,000
Equity financing to be raised arrangement, expiration date			May 24, 2017
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Borrowing capacity description			provides for up to a maximum amount of $5 million based on a borrowing base equivalent of 85% of eligible accounts receivable plus the lesser of $2 million or 50% of eligible inventory.
Maximum borrowing capacity		$ 5,000,000
Borrowing base equivalent of eligible accounts receivable, percentage		85.00%
Monthly interest payment		$ 2,000
Monthly administrative fee		$ 1,000
Annual facility fee on maximum amount borrowable		1.00%
Effective interest rate of funds borrowed			8.50%
Automatic renewal date			Dec. 31, 2019
Automatic renewal term		1 year
Debt issuance costs		$ 228,000
Minimum tangible net worth required for compliance		13,000,000
Minimum working capital required for compliance		$ 4,000,000
Remaining borrowing capacity			$ 4,100,000
Minimum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Minimum interest rate		6.50%
Maximum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Borrowing base equivalent of eligible inventory		$ 2,000,000
Borrowing base equivalent of eligible inventory, percentage		50.00%
Prime Rate [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate		3.00%
Stillwater Trust LLC [Member] | eMagin Corporation [Member]
Line of Credit Facility [Line Items]
Equity method, ownership percentage	46.00%
Working Capital Purposes [Member] | Unsecured Financing Arrangement With Largest Investor [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 2,000,000
Availability Should Current Lender Not Provide Under Normal Terms and Conditions [Member] | Unsecured Financing Arrangement With Largest Investor [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 3,000,000