Debt - Line of Credit With FGI (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument
Total debt		$ 1,238,000	$ 3,261,000
Line of Credit | Line of credit with FGI
Debt Instrument
Maximum borrowing capacity		$ 7,500,000.0
Interest rate (as a percent)			6.50%
Line of credit facility, interest rate at period end		6.50%	6.50%
Gross accounts receivable pledged as collateral		$ 800,000
Total debt		1,238,000	$ 1,458,000
Line of Credit | Line of credit with FGI | Prime Rate
Debt Instrument
Debt instrument, basis spread on variable rate	2.50%
Line of Credit | Secured Debt | Line of credit with FGI
Debt Instrument
Total debt		$ 400,000