DERIVATIVE INSTRUMENTS - Interest Rate Swap Agreements (Details) - USD ($) |
12 Months Ended | 50 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2016 |
Oct. 15, 2016 |
Dec. 31, 2015 |
Aug. 15, 2012 |
|
| Derivative disclosures | ||||
| Debt Instrument, Description of Variable Rate Basis | three month LIBOR | three-month LIBOR | ||
| LIBOR | ||||
| Derivative disclosures | ||||
| Variable interest rate (as a percent) | 4.35% | |||
| Interest rate swap agreements | ||||
| Derivative disclosures | ||||
| Notional amount of interest rate swaps | $ 10,000,000 | |||
| Fixed interest (as a percent) | 4.66% | |||
| Fair value of interest rate swaps | $ 126,000 | |||
| Interest rate swap agreements | LIBOR | ||||
| Derivative disclosures | ||||
| Variable interest rate (as a percent) | 2.75% |