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LONG-TERM DEBT (Details) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Sep. 03, 2020 USD ($) | Jul. 20, 2016 USD ($)
Long-term debt |  |  |  |  |
Long-term debt, net | $ 142,455,000 |  | $ 167,162,000 |  |
Minimum |  |  |  |  |
Long-term debt |  |  |  |  |
Commitment fee percentage | 0.35% |  |  |  |
Maximum |  |  |  |  |
Long-term debt |  |  |  |  |
Commitment fee percentage | 0.575% |  |  |  |
Term Loan Facility |  |  |  |  |
Long-term debt |  |  |  |  |
Face amount of debt |  |  |  | $ 200,000,000.0 |
Amount outstanding | $ 160,000,000.0 |  |  |  |
Payment that are due in next twelve months | 15,000,000.0 |  |  |  |
Term Loan Facility | Period From December 31, 2020 To September 30, 2021 |  |  |  |  |
Long-term debt |  |  |  |  |
Interest rate |  |  |  | 1.25% |
Term Loan Facility | Period From December 31, 2021 And Thereafter |  |  |  |  |
Long-term debt |  |  |  |  |
Interest rate |  |  |  | 2.50% |
Term Loan Facility | Due in the next twelve months |  |  |  |  |
Long-term debt |  |  |  |  |
Mandatory principal payment due in next twelve months |  |  |  | $ 15,000,000.0 |
Prior Credit Facility |  |  |  |  |
Long-term debt |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 250,000,000.0
Fourth Amended Credit Facility |  |  |  |  |
Long-term debt |  |  |  |  |
Maximum borrowing capacity |  |  |  | 270,000,000.0 |
Long-term debt, net | $ 160,000,000.0 |  |  |  |
Total leverage ratio | 2.1 |  |  |  |
Fixed charge coverage ratio | 4.6 |  |  |  |
Unamortized debt issuance costs | $ 2,500,000 |  |  |  |
Fourth Amended Credit Facility | COVID-19 Pandemic |  |  |  |  |
Long-term debt |  |  |  |  |
Maximum borrowing capacity | $ 70,000,000.0 |  |  |  |
Fourth Amended Credit Facility | Minimum |  |  |  |  |
Long-term debt |  |  |  |  |
Fixed charge coverage ratio | 1.15 |  |  |  |
Fourth Amended Credit Facility | Maximum |  |  |  |  |
Long-term debt |  |  |  |  |
Total leverage ratio | 4.75 |  |  |  |
Revolving Credit Facility |  |  |  |  |
Long-term debt |  |  |  |  |
Maximum borrowing capacity | $ 75,000,000.0 |  |  | 70,000,000 |
Remaining available borrowings |  | $ 70,000,000.0 |  |  |
Amount drawn under the facility |  | $ 0 |  |  |
Additional borrowing capacity |  |  |  | $ 75,000,000.0 |
Revolving Credit Facility | Minimum |  |  |  |  |
Long-term debt |  |  |  |  |
Additional borrowing capacity | 15,000,000.0 |  |  |  |
Integral multiple additional borrowing capacity | $ 1,000,000.0 |  |  |  |
Revolving Credit Facility | Minimum | LIBOR |  |  |  |  |
Long-term debt |  |  |  |  |
Percentage points added to the reference rate | 1.75% |  |  |  |
Revolving Credit Facility | Minimum | Base Rate |  |  |  |  |
Long-term debt |  |  |  |  |
Percentage points added to the reference rate | 0.75% |  |  |  |
Revolving Credit Facility | Maximum | LIBOR |  |  |  |  |
Long-term debt |  |  |  |  |
Percentage points added to the reference rate | 3.25% |  |  |  |
Revolving Credit Facility | Maximum | Base Rate |  |  |  |  |
Long-term debt |  |  |  |  |
Percentage points added to the reference rate | 2.25% |  |  |  |
Term Loan Facility |  |  |  |  |
Long-term debt |  |  |  |  |
Optional prepayment | $ 20,000,000.0 |  |  |  |
Mandatory payment | $ 2,500,000 |  |  |  |

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- Definition Represents the ratio of earnings-before-interest-taxes-depreciation and amortization (EBITDA) to fixed charges allowed under the terms of the covenants of the credit facility. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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