Interim Period Reporting (Details) - USD ($)		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 02, 2017	Mar. 31, 2017	Aug. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2010	Dec. 31, 2016
Interim Period Reporting (Textual)
Number of equipment sold								$ 50,000,000
Net loss				$ (998,000)	$ (1,331,000)	$ (1,871,000)	$ (2,698,000)
Accumulated deficit				$ (180,911,000)		(180,911,000)			$ (179,040,000)
Net cash used in operating activities						$ (3,033,000)	$ (2,075,000)
Issuance of common stock			4,600,000
Net proceeds from issuance of common stock			$ 4,600,000
Shelf registration common stock offering price		$ 20,000,000
Shelf registration statement expiration date		Mar. 24, 2020
Securities Purchase Agreement [Member] | August 2016 Private Placement [Member]
Interim Period Reporting (Textual)
Issuance of common stock			8,627,352
Net proceeds from issuance of common stock			$ 7,900,000
Securities Purchase Agreement [Member] | Subsequent Event [Member] | August 2017 Private Placement [Member]
Interim Period Reporting (Textual)
Issuance of common stock	9,750,000
Share price	$ 1.00
Proceeds from private placement	$ 1,800,000
Warrants to purchase shares of common stock	3,250,000
Warrants purchase exercise price	$ 2.00
Aggregate purchase price of warrants	$ 9,750,000
Warrants exercised value	$ 6,500,000
Purchase Warrants [Member] | August 2016 Private Placement [Member]
Interim Period Reporting (Textual)
Issuance of common stock			4,313,676
Share price			$ 1.12
Cash proceeds from warrants			$ 4,800,000
Warrant expiration date			Feb. 17, 2022
Employee Investor Shares [Member] | August 2016 Private Placement [Member]
Interim Period Reporting (Textual)
Issuance of common stock			427,352
Net proceeds from issuance of common stock			$ 500,000
Share price			$ 1.17
Outside Investor Shares [Member] | August 2016 Private Placement [Member]
Interim Period Reporting (Textual)
Share price			$ 1.00
Pre-Funded Warrant Shares [Member] | August 2016 Private Placement [Member]
Interim Period Reporting (Textual)
Securities purchase agreement, description			Up to 3,600,000 shares issuable upon exercise of warrants (the "Pre-Funded Warrants") by outside investors for which we received $3,564,000 pre-funded in proceeds and will receive up to $36,000 in proceeds upon future cash exercises.