Notes Payable (Details) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2014 USD ($)	Mar. 31, 2016 USD ($) tranche item	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Aug. 31, 2015 USD ($)
Notes Payable
Current portion of notes payable		$ 2,878		$ 2,128
Interest Expense		$ 124	$ 116
Credit facility
Notes Payable
Proceeds from the issuance of debt	$ 2,000
Accrued interest rate (as a percent)	5.50%	6.50%
Number of tranches | tranche		4
Available		$ 12,000
Borrowed		$ 7,000
Monthly payments (as a percent)		4.166%
Current portion of notes payable		$ 2,600
Interest Expense		119		$ 116
Accrued interest		$ 39
Number of financial covenants associated with the term loans | item		0
Credit facility | Prime rate
Notes Payable
Variable interest rate	prime	prime
Variable rate basis (as a percent)	2.25%	3.25%
Term Loan Tranche A
Notes Payable
Available		$ 2,000
Borrowed		2,000
Term Loan Tranche B
Notes Payable
Available		5,000
Borrowed		5,000
Term Loan Tranche C
Notes Payable
Available		2,500
Term Loan Tranche D
Notes Payable
Available		2,500
Vendor Debt
Notes Payable
Balance of outstanding loan		$ 253			$ 584