Notes Payable (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Dec. 31, 2014 USD ($)	Apr. 30, 2014 USD ($)	Dec. 31, 2016 USD ($) item	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Aug. 31, 2015 USD ($)
Notes Payable
Proceeds from the issuance of debt					$ 6,975
Current portion of notes payable			$ 3,500	$ 2,128
Interest Expense			464	475	117
2017			3,500
2018			1,750
Total maturities			$ 5,250
Credit facility
Notes Payable
Proceeds from the issuance of debt		$ 2,000
Accrued interest rate (as a percent)		5.50%	6.50%
Number of amendments | item			4
Borrowed			$ 5,300
Proceeds from line of credit	$ 5,000
Monthly payments (as a percent)			4.166%
Current portion of notes payable			$ 3,500
Interest Expense			459	$ 461	$ 117
Accrued interest			$ 31
Credit facility | Prime rate
Notes Payable
Variable interest rate		prime	prime
Variable rate basis (as a percent)		2.25%	3.25%
Vendor Debt
Notes Payable
Balance of outstanding loan						$ 584