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LONG-TERM DEBT - Narrative (Details) |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jun. 25, 2018 USD ($) | Aug. 29, 2017 USD ($) credit_agreement | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Number of credit agreements | credit_agreement |  | 2 |  |  |  |
Write-off of debt issuance costs |  |  |  |  | $ 60,000 | $ 578,000
Interest expense |  |  | $ 4,781,000 | $ 4,928,000 | 15,959,000 | $ 12,573,000
ABL Revolver |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity under credit agreement |  | $ 85,000,000 |  |  |  |
Maturity date |  | Aug. 29, 2022 |  |  |  |
Amount outstanding under credit facility |  |  | 0 |  | 0 |
Borrowing capacity, including impact of letter of credit |  |  | $ 79,900,000 |  | $ 79,900,000 |
ABL Revolver | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Incremental increase in term loan |  | $ 10,000,000 |  |  |  |
ABL Revolver | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Incremental increase in term loan |  | $ 50,000,000 |  |  |  |
ABL Revolver | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on base rate |  | 1.25% |  |  |  |
ABL Revolver | LIBOR | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on base rate |  | 1.75% |  |  |  |
Term Loan B |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument face amount |  | $ 250,000,000 |  |  |  |
Maturity date |  | Aug. 29, 2023 |  |  |  |
Prepayment penalty percentage on soft call | 1.00% |  |  |  |  |
Prepayment penalty period on soft call | 6 months |  |  |  |  |
Write-off of debt issuance costs | $ 60,000 |  |  |  |  |
Interest expense | $ 900,000 |  |  |  |  |
Term Loan B | LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on base rate | 4.75% | 5.50% |  |  |  |
Term Loan B | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on base rate | 1.00% | 1.00% |  |  |  |

X
- Definition Incremental increase under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
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- Definition Line of Credit Facility, Soft Call Prepayment Penalty Period + References No definition available. + Details
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- Definition Number of credit agreement the entity entered into. + 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=6877327&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=6876686&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=6879938&loc=d3e572229-122910 + Details
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