Subsequent Events (Details)				12 Months Ended
	Mar. 27, 2017 $ / shares	Feb. 13, 2017 USD ($) shares	Jan. 04, 2017 USD ($) item shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Subsequent Event [Line Items]
Compensation expense | $				$ 17,000	$ 12,000	$ 32,000
Accumulated net operating loss carryforwards | $				28,200,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of directors | item			4
Subsequent Event [Member] | Rights Plan [Member]
Subsequent Event [Line Items]
Number of preferred share purchase right for each outstanding share of its common stock to shareholder | $ / shares	$ 1
Common stock, Threshold for exercise of rights percentage	4.95%
Common stock, Threshold for exercise of rights grandfathered percentage	4.95%
Stock discount	50.00%
Subsequent Event [Member] | Rights [Member]
Subsequent Event [Line Items]
Options issued to purchase		4,498,698
Comm stock, New shares issued		4,498,698
Proceeds from issuance of stocks | $		$ 2,700,000
Directors And CEO [Member]
Subsequent Event [Line Items]
Compensation expense | $				$ 14,000
Directors, CFO And Interim CEO [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Options issued to purchase			5,264
Comm stock, New shares issued			5,264
Compensation expense | $			$ 4,000
Directors, Management, And Affiliates [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Options issued to purchase		3,293,407
Comm stock, New shares issued		3,293,407