DEBT AND CREDIT ARRANGEMENTS - Schedule of Long-term Debt (Details) - USD ($) |
Sep. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Long-term debt | $ 25,394,000 | $ 25,452,000 |
| Less: current maturities | 117,000 | 113,000 |
| Total long-term debt, net of current maturities | 25,277,000 | 25,339,000 |
| Note payable to Squadron | ||
| Debt Instrument [Line Items] | ||
| Long-term debt | 20,000,000 | 20,000,000 |
| Revolving credit facility with Squadron | Revolving Credit Facility | ||
| Debt Instrument [Line Items] | ||
| Long-term debt | 3,947,000 | 3,921,000 |
| Mortgage payable to affiliate | ||
| Debt Instrument [Line Items] | ||
| Long-term debt | 1,447,000 | 1,531,000 |
| Less: current maturities | $ 117,000 | $ 113,000 |