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LONG-TERM DEBT (Details) - USD ($) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014 | Dec. 19, 2014
Long-term debt |  |  |
Less: current portion | $ (6,254,000) | $ (6,083,000) |
Total long-term debt | $ 28,141,000 | 32,794,000 |
Wholesale Mobility Funds |  |  |
Long-term debt |  |  |
Commitment fee (as a percent) | 1.75% |  |
Amended Credit Facility [Member] |  |  |
Long-term debt |  |  |
Borrowings | $ 0 | 0 |
Term loans |  |  |
Long-term debt |  |  |
Outstanding debt | 34,395,000 | 38,877,000 |
Term loans | Ahana Debt |  |  |
Long-term debt |  |  |
Term loan assumed | $ 38,900,000 |  |
Term loans | Ahana Debt | Minimum |  |  |
Long-term debt |  |  |
Effective interest rate (as a percent) | 4.50% |  |
Term loans | Ahana Debt | Maximum |  |  |
Long-term debt |  |  |
Effective interest rate (as a percent) | 6.00% |  |
Term loans | Public Service Electric & Gas Note [Member] |  |  |
Long-term debt |  |  |
Face amount of term loans | $ 2,800,000 |  |
Stated interest rate | 11.30% |  |
Revolving credit facility | Amended Credit Facility [Member] |  |  |
Long-term debt |  |  |
Maximum borrowing capacity |  |  | $ 225,000,000
Revolving credit facility | Amended Credit Facility [Member] | Minimum |  |  |
Long-term debt |  |  |
Commitment fee (as a percent) | 0.175% |  |
Revolving credit facility | Amended Credit Facility [Member] | Minimum | LIBOR |  |  |
Long-term debt |  |  |
Basis spread on variable rate (as a percent) | 1.50% |  |
Revolving credit facility | Amended Credit Facility [Member] | Minimum | Base rate |  |  |
Long-term debt |  |  |
Basis spread on variable rate (as a percent) | 0.50% |  |
Revolving credit facility | Amended Credit Facility [Member] | Maximum |  |  |
Long-term debt |  |  |
Commitment fee (as a percent) | 0.25% |  |
Revolving credit facility | Amended Credit Facility [Member] | Maximum | LIBOR |  |  |
Long-term debt |  |  |
Basis spread on variable rate (as a percent) | 1.75% |  |
Revolving credit facility | Amended Credit Facility [Member] | Maximum | Base rate |  |  |
Long-term debt |  |  |
Basis spread on variable rate (as a percent) | 0.75% |  |
Swingline sub-facility | Amended Credit Facility [Member] |  |  |
Long-term debt |  |  |
Maximum borrowing capacity |  |  | 10,000,000
Swingline sub-facility | Amended Credit Facility [Member] | Federal Funds Effective Rate |  |  |
Long-term debt |  |  |
Basis spread on variable rate (as a percent) | 0.50% |  |
Swingline sub-facility | Amended Credit Facility [Member] | Minimum | Base rate |  |  |
Long-term debt |  |  |
Basis spread on variable rate (as a percent) | 1.00% |  |
Letter of credit sub-facility |  |  |
Long-term debt |  |  |
Outstanding letters of credit | $ 10,600,000 | $ 10,600,000 |
Letter of credit sub-facility | Wholesale Mobility Funds |  |  |
Long-term debt |  |  |
Outstanding letters of credit | $ 10,600,000 |  |
Letter of credit sub-facility | Amended Credit Facility [Member] |  |  |
Long-term debt |  |  |
Maximum borrowing capacity |  |  | 10,000,000
Letter of credit sub-facility | Amended Credit Facility [Member] | Wholesale Mobility Funds |  |  |
Long-term debt |  |  |
Maximum borrowing capacity |  |  | $ 25,000,000

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