Loan and Security Agreement (Details) - USD ($)			3 Months Ended		9 Months Ended
	Aug. 04, 2015	May 30, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jul. 10, 2014
Debt Disclosure [Abstract]
Maximum borrowing limit		$ 30,000,000
Loan and Security Agreement
Loss on retirement of Credit Facility			$ 0	$ (1,572,000)	$ 0	$ (1,572,000)
Credit Facility
Loan and Security Agreement
Loss on retirement of Credit Facility				$ (1,600,000)
Initial Term Loan
Loan and Security Agreement
Aggregate principal amount		$ 21,000,000
Basis spread (as a percent)		9.85%
First Amendment
Loan and Security Agreement
Aggregate principal amount							$ 4,000,000.0
Long-term Debt							$ 4,000,000
First Amendment | Credit Facility
Loan and Security Agreement
Amount prepaid for relevant fees and remaining debt owed under the Credit Facility and the First Amendment	$ 26,500,000