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v3.21.2

DEBT - Revolving Credit Agreement (Details) |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 21, 2018 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 28, 2021 USD ($) | Sep. 27, 2021 USD ($) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  | $ 423,835,000 |  |  |  | $ 423,835,000 |  |  |  | $ 453,835,000
Interest expense |  | 5,847,000 | $ 5,749,000 |  |  | 18,031,000 | $ 17,903,000 |  |  |
Repayments of lines of credit |  |  |  |  |  | 347,000 | 45,584,000 |  |  |
Revolving Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  | $ 225,000,000 | $ 175,000,000 |
Line of credit facility accordion feature increase amount |  | 50,000,000 |  |  |  | 50,000,000 |  | $ 50,000,000 |  |
Line of credit facility accordion feature increase limit |  | 275,000,000 |  |  |  | 275,000,000 |  |  |  |
Line of credit facility, unused capacity, commitment fee percentage | 0.20% |  |  |  |  |  |  |  |  |
Fixed charge coverage ratio | 1.0 |  |  |  |  |  |  |  |  |
Line of credit facility, excess availability, commitment percentage, threshold | 10.00% |  |  |  |  |  |  |  |  |
Long-term debt, gross |  | 0 | 0 |  |  | 0 | 0 |  |  |
Interest expense |  | 0 | $ 0 |  |  | 0 | $ 200,000 |  |  |
Proceeds from issuance of long-term debt |  |  |  |  | $ 45,000,000 |  |  |  |  |
Repayments of lines of credit |  |  |  | $ 45,000,000 |  |  |  |  |  |
Liquidity position to meet future obligations, amount |  | $ 268,700,000 |  |  |  | $ 268,700,000 |  |  |  | $ 384,000,000
Revolving Credit Agreement | London Interbank Offered Rate (LIBOR) | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 1.25% |  |  |  |  |  |  |  |  |
Revolving Credit Agreement | London Interbank Offered Rate (LIBOR) | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 1.75% |  |  |  |  |  |  |  |  |
Revolving Credit Agreement | Base Rate | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 0.25% |  |  |  |  |  |  |  |  |
Revolving Credit Agreement | Base Rate | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 0.75% |  |  |  |  |  |  |  |  |
Letter of Credit | Revolving Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 15,000,000 |  |  |  |  |  |  |  |  |
Bridge Loan | Revolving Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 17,500,000 |  |  |  |  |  |  |  |  |

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