Debt - Line of Credit With FGI (Details) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument
Total debt		$ 672,000	$ 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%
Gross accounts receivable pledged as collateral		$ 400,000
Total debt		672,000	$ 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		$ 300,000