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CREDIT FACILITY AND ACQUISITION DEBT (Long-term Debt Table) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Sep. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |  |
Accumulated Amortization, Debt Issuance Costs | $ 937,000 |  |  | $ 819,000
Current maturities on long-term debt | (913,000) |  |  | (1,027,000)
Long-term debt, excluding current maturities | 4,442,000 |  |  | 4,482,000
Revolving credit facility present accordion provisions | 75,000,000.0 |  |  |
Credit Facility amortization of debt issuance costs | 193,000 |  | $ 200,000 |
Credit Agreement 2018 [Member] | Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Carrying value of the liability component |  |  |  | 47,200,000
Credit Facility amortization of debt issuance costs |  | $ 118,000 | $ 126,000 |
Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt issuance costs |  |  |  | (1,136,000)
Credit Agreement [Member] | Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Carrying value of the liability component | 27,282,000 |  |  | 46,064,000
Notes Payable, Other Payables [Member] | Acquisition Debt, Deferred Purchase Price [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Carrying value of the liability component | 5,355,000 |  |  | $ 5,509,000
Revolving Credit Facility [Member] | Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt issuance costs | $ (1,018,000) |  |  |

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- Definition Additional borrowing capacity under the credit facility's accordion feature providing the right to increase the line of credit borrowing capacity. + References No definition available. + Details
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