Liquidity and Financial Condition (Details Textual) - USD ($) $ in Thousands, shares in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 29, 2015	Jul. 29, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Apr. 30, 2014	Dec. 31, 2013
Liquidity and Financial Condition [Line Items]
Retained Earnings (Accumulated Deficit), Total			$ (56,421)		$ (56,421)		$ (45,829)
Net Income (Loss) Attributable to Parent			(4,160)	$ (11,941)	(10,592)	$ (16,460)
Net Cash Provided by (Used in) Operating Activities					(9,857)	(10,511)
Cash and Cash Equivalents, at Carrying Value, Total			8,956	$ 934	8,956	934	$ 6,767		$ 49
Working Capital Deficit			6,000		6,000
Long-term Debt			3,662		3,662
Proceeds from Issuance of Long-term Debt, Total		$ 4,500
Working Capital					14,000
Proceeds from Issuance of Preferred Stock and Preference Stock					12,000	$ 0
Revolving Credit Facility [Member]
Liquidity and Financial Condition [Line Items]
Line of Credit, Current			$ 5,000		$ 5,000			$ 5,000
Mutual fund Discover Growth Fund [Member]
Liquidity and Financial Condition [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	316
Loan and Security Agreement [Member]
Liquidity and Financial Condition [Line Items]
Long-term Debt		21,500
Proceeds from Issuance of Long-term Debt, Total		13,500
Debt Instrument, Unused Borrowing Capacity, Amount		5,000
Loan and Security Agreement [Member] | Revolving Credit Facility [Member]
Liquidity and Financial Condition [Line Items]
Proceeds from Related Party Debt		500
Loan and Security Agreement [Member] | Mutual fund Discover Growth Fund [Member]
Liquidity and Financial Condition [Line Items]
Proceeds from Issuance of Preferred Stock and Preference Stock		12,000
Discover [Member] | Loan and Security Agreement [Member]
Liquidity and Financial Condition [Line Items]
Long-term Debt		3,000
Proceeds from Issuance of Long-term Debt, Total		9,000
Hercules [Member] | Loan and Security Agreement [Member]
Liquidity and Financial Condition [Line Items]
Proceeds from Issuance of Long-term Debt, Total		4,500
Debt Instrument, Unused Borrowing Capacity, Amount		$ 5,000
MidCap Financial Trust [Member]
Liquidity and Financial Condition [Line Items]
Repayments of Senior Debt, Total	$ 2,100