Credit Facility	6 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]
Credit Facility	Credit Facility The Company is party to a Loan and Security Agreement, as amended (the “Credit Facility”), with a bank. As of June 30, 2017, the Credit Facility permitted the Company to borrow up to $2.5 million on a revolving basis. The Credit Facility was amended, most recently on December 29, 2016 and expires on January 15, 2018. Amounts borrowed under the Credit Facility will bear interest equal to the prime rate plus 0.5%. Any borrowings under the Credit Facility will be collateralized by the Company’s cash, accounts receivable, inventory, and equipment. The Credit Facility includes traditional lending and reporting covenants. These include certain financial covenants applicable to liquidity that are to be maintained by the Company. As of June 30, 2017, the Company was in compliance with these covenants and had not borrowed any funds under the Credit Facility. However, $507,381 of the amount under the Credit Facility is restricted to support letters of credit issued in favor of the Company's facilities landlords and a materials component supplier. Consequently, the amount available for borrowing under the Credit Facility as of June 30, 2017 was approximately $2.0 million.

Credit Facility

6 Months Ended

Jun. 30, 2017

The Company is party to a Loan and Security Agreement, as amended (the “Credit Facility”), with a bank. As of June 30, 2017, the Credit Facility permitted the Company to borrow up to $2.5 million on a revolving basis. The Credit Facility was amended, most recently on December 29, 2016 and expires on January 15, 2018. Amounts borrowed under the Credit Facility will bear interest equal to the prime rate plus 0.5%. Any borrowings under the Credit Facility will be collateralized by the Company’s cash, accounts receivable, inventory, and equipment. The Credit Facility includes traditional lending and reporting covenants. These include certain financial covenants applicable to liquidity that are to be maintained by the Company. As of June 30, 2017, the Company was in compliance with these covenants and had not borrowed any funds under the Credit Facility. However, $507,381 of the amount under the Credit Facility is restricted to support letters of credit issued in favor of the Company's facilities landlords and a materials component supplier. Consequently, the amount available for borrowing under the Credit Facility as of June 30, 2017 was approximately $2.0 million.