Commitments and contingencies |
9 Months Ended |
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Sep. 30, 2015 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments and contingencies |
Commitments and contingencies
Letters of Credit
A letter of credit of $583,073, the original value of the short term investment prior to an increase from interest income of $2,629, was outstanding under a revolving bank credit facility needed to collateralize a performance bond on a certain installation project. As the projects are completed, collateral requirements and the associated revolving bank credit facility has relieved resulting in the release of restricted cash and a lowering of the revolving bank credit facility. The remaining restricted cash balance of $294,728 is for retainage associated with this performance bond.
On June 15, 2015, the Company entered into a Non-Revolving Line of Credit Agreement with John N. Hatsopoulos, the Company's Co-Chief Executive Officer and a Company Director (see Note 3).
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