Notes Payable (Details) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Dec. 31, 2014 USD ($)	Apr. 30, 2014 USD ($)	Sep. 30, 2016 USD ($) item	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) item	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Aug. 31, 2015 USD ($)
Notes Payable
Current portion of notes payable			$ 3,500		$ 3,500		$ 2,128
Interest Expense			$ 118	$ 121	$ 365	$ 353
Credit facility
Notes Payable
Proceeds from the issuance of debt	$ 5,000	$ 2,000
Accrued interest rate (as a percent)		5.50%	6.50%		6.50%
Borrowed			$ 6,100		$ 6,100
Monthly payments (as a percent)					4.166%
Current portion of notes payable			3,500		$ 3,500
Interest Expense			116		356
Accrued interest			$ 35		$ 35
Number of financial covenants associated with the term loans | item			0		0
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