Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital [Member]	Retained Earnings / Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Beginning Balance at Dec. 31, 2015	$ 63	$ 135,839	$ (120,621)	$ (13,754)	$ 1,527
Beginning Balance (in shares) at Dec. 31, 2015	6,263,975			1,005,092
Net loss			(359)
Stock based compensation		449			449
Issuance of shares - stock purchase, shares	3,750,000
Issuance of shares - stock purchase, value	$ 37	2,700			2,737
Costs of stock purchase		(201)			(201)
Issuance of shares - option exercises, shares	12,161
Issuance of shares - option exercises, value		7			7
Purchase of common stock for treasury, shares				10,401
Purchase of common stock for treasury, value				$ (10)	(10)
Ending Balance at Dec. 31, 2016	$ 100	138,794	(120,980)	$ (13,764)	4,150
Ending Balance (in shares) at Dec. 31, 2016	10,026,136			1,015,493
Net loss			(101)		(101)
Stock based compensation		31			31
Costs of stock purchase		(25)			(25)
Issuance of shares - option exercises, shares	135,125
Issuance of shares - option exercises, value	$ 2	99			101
Ending Balance at Jun. 30, 2017	$ 102	$ 138,899	$ (121,081)	$ (13,764)	$ 4,156
Ending Balance (in shares) at Jun. 30, 2017	10,161,261			1,015,493