|
Commitments and contingencies - Agreement with Digital Energy Corp. (Details) (USD $)
|
Oct. 26, 2011
Financial guarantee
|
Dec. 31, 2013
Revolving credit facility
|
Dec. 31, 2013
Chief Executive Officer (John N. Hatsopoulos)
Letter of credit
|
|---|---|---|---|
| Guarantor Obligations [Line Items] | |||
| Letter of credit outstanding | $ 180,000 | $ 583,073 | |
| Certificate of deposit securing letter of credit | 180,000 | ||
| Promissory note receivable amount | 180,000 | ||
| Promissory note receivable, stated interest rate | 6.00% | ||
| Collateralized financings | $ 1,055,000 |
| X | ||||||||||
|
- Definition
Loans Receivable, Interest Rate, Stated Percentage No definition available.
|
| X | ||||||||||
|
- Definition
A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The value of the collateral (typically cash) that the entity receives in a financing transaction in exchange for securities lent. This item represents a liability in the financial statements of the lender of the securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
|
| X | ||||||||||
|
- Definition
An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) more than one year from the balance sheet date. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|