Notes Payable - Long-term and Short-term, Combined (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Apr. 11, 2016	Apr. 01, 2016	Dec. 31, 2015
Debt, long-term and short-term, combined amount
Total debt	$ 10,656			$ 11,072
Less current portion	(4,242)			(3,513)
Long-term debt, net of current portion	6,414			7,559
Unamortized debt discount	3,700			100
Line of credit with FGI | Line of Credit
Debt, long-term and short-term, combined amount
Total debt	2,992			3,513
$0.8 million, 8% senior convertible promissory note due 2016 | Convertible Debt
Debt, long-term and short-term, combined amount
Face amount of debt	$ 800
Interest rate (as a percent)	8.00%
Total debt	$ 750
$0.5 million, 8% convertible promissory note due 2016 | Convertible Debt
Debt, long-term and short-term, combined amount
Face amount of debt	$ 500
Interest rate (as a percent)	8.00%
Total debt	$ 500
Convertible Debt | $0.5 million, 8% convertible director note due 2017
Debt, long-term and short-term, combined amount
Face amount of debt	$ 500	$ 500
Interest rate (as a percent)	8.00%	8.00%
Total debt	$ 500
Convertible Debt | $1.5 million, 8% convertible shareholder note due 2018
Debt, long-term and short-term, combined amount
Face amount of debt	$ 1,500			$ 1,500
Interest rate (as a percent)	8.00%			8.00%
Total debt	$ 841			$ 1,623
Convertible Debt | $3.0 million, 8% convertible shareholder note due 2018
Debt, long-term and short-term, combined amount
Face amount of debt	$ 3,000			$ 3,000
Interest rate (as a percent)	8.00%			8.00%
Total debt	$ 1,535			$ 2,964
Convertible Subordinated Debt | $3.0 million 8% subordinated convertible shareholder note due 2018
Debt, long-term and short-term, combined amount
Face amount of debt	$ 3,000			$ 3,000
Interest rate (as a percent)	8.00%			8.00%
Total debt	$ 1,538			$ 2,972
Notes Payable, Other Payables | $2.0 million, 8% shareholder note due 2017
Debt, long-term and short-term, combined amount
Face amount of debt	$ 2,000		$ 2,000
Interest rate (as a percent)	8.00%		8.00%
Total debt	$ 2,000