Debt instrument accretion of original issue discount.

No definition available.

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Namespace Prefix:	kldi_
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Balance Type:	credit
Period Type:	duration

- Definition

Debt instrument basis spread on variable rate option three.

+ References

No definition available.

+ Details

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Namespace Prefix:	kldi_
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Period Type:	duration

- Definition

Debt instrument deferred closing fees.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Debt instrument interest rate stated percentage in cash.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt instrument interest rate stated percentage in kind.

+ References

No definition available.

+ Details

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Namespace Prefix:	kldi_
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Balance Type:	na
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- Definition

Debt instrument original issue discount.

+ References

No definition available.

+ Details

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Namespace Prefix:	kldi_
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- Definition

Delayed draw term loans

+ References

No definition available.

+ Details

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Namespace Prefix:	kldi_
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Balance Type:	credit
Period Type:	instant

- Definition

Initial term loan borrowing.

+ References

No definition available.

+ Details

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Namespace Prefix:	kldi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loans amortize rate .

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Mandatory prepayment amount.

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No definition available.

+ Details

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- Definition

Percentage of additional amount will add to principal amount.

+ References

No definition available.

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- Definition

Percentage of principal amount paid In event of default.

+ References

No definition available.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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Period Type:	instant

- Definition

Date the debt agreement requires the first payment to be made, in YYYY-MM-DD format.

+ References

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- Definition

Description of reference rate used for variable rate of debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

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Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

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- Definition

The average effective interest rate during the reporting period.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Period Type:	duration

- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

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- Definition

Amount of the required periodic payments applied to principal.

+ References

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Period Type:	duration

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Period Type:	instant

- Definition

Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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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.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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Date the credit facility terminates, in YYYY-MM-DD format.

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Maximum borrowing capacity 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.

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Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Cash payments for and related to principal collection on loans related to operating activities.

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Indebtedness divided by net capital.

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No definition available.

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- Details

Name:	us-gaap_DebtInstrumentAxis=kldi_ConvertibleDebentureNotesDueTwoThousandTwentyFourMember
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Long Term Debt - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended	9 Months Ended	12 Months Ended
	Feb. 08, 2021	Dec. 19, 2019	Dec. 09, 2016	Feb. 28, 2021	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total debt					$ 519,615	$ 503,541	$ 506,000
Term loan balance due							0
Loss on debt extinguishment					(7,257)		(7,203)
Mandatory prepayment amount						0	0
Accretion of original issue discount						3,700	2,700
Amortization of debt issuance costs						1,600	2,100
2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Delayed draw term loans	$ 50,000
Debt instrument, maturity description	The Initial Term Loans, Delayed Draw Term Loans and Revolving Credit Loans are each scheduled to mature on the earlier of February 16, 2026 or six months prior to maturity of our Debentures (as defined below) due in December 2024. The Initial Term Loans and Delayed Draw Term Loans may be voluntarily repaid at any time but may be subject to a prepayment premium. The Initial Term Loans and Delayed Draw Term Loans are required to be repaid under certain circumstances, including with Excess Cash Flow (as defined in the 2021 Credit Agreement), the proceeds of an Asset Sale or Casualty Event (each as defined in the 2021 Credit Agreement) and the proceeds of certain refinancing indebtedness.
Debt principal amount	$ 300,000
2021 Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, net leverage ratio	7.00
2021 Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, net leverage ratio	1.00
Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Delayed draw term loans	$ 50,000
Debt instrument, maturity description	The Initial Term Loans, Delayed Draw Term Loans and Revolving Credit Loans are each scheduled to mature on the earlier of February 16, 2026 and or six months prior to maturity of our Debentures due in December 2024. The Initial Term Loans and Delayed Draw Term Loans may be voluntarily repaid at any time, but may be subject to a prepayment premium. The Initial Term Loans and Delayed Draw Term Loans are required to be repaid under certain circumstances, including with Excess Cash Flow (as defined in the 2021 Credit Agreement), the proceeds of an Asset Sale or Casualty Event (each as defined in the 2021 Credit Agreement) and the proceeds of certain refinancing indebtedness.
Initial term loan borrowing	$ 300,000
Loss on debt extinguishment				$ (7,200)
Subsequent Event [Member] \| 2021 Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, net leverage ratio	7.00
Subsequent Event [Member] \| 2021 Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, net leverage ratio	1.00
Letter of Credit [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit loans	$ 10,000				600
Revolving Credit Facility [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit loans	40,000
Revolving Credit Facility [Member] \| Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit loans	40,000
Revolving Credit Loans [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit loans	$ 40,000
Available borrowing capacity					39,400
2016 Credit Agreement [Member]
Debt Instrument [Line Items]
Debt closing fees			$ 600			13,600
2016 Credit Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt issuance costs				$ 7,200
2016 Credit Agreement [Member] \| Revolving Loan Commitment [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 30,000
Loan maturing date						Jun. 09, 2022
Revolving credit loans						$ 0	$ 0
Available borrowing capacity						29,300
2016 Credit Agreement [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Revolving credit loans						$ 700
2016 Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loss on debt extinguishment					7,300
Maximum borrowing capacity					$ 30,000
Loan maturing date					Jun. 09, 2022
Adjusted Eurocurrency Rate [Member] \| Revolving Credit Facility [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	4.00%
Adjusted Eurocurrency Rate [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	4.00%
LIBOR [Member] \| 2016 Credit Agreement [Member] \| Revolving Loan Commitment [Member]
Debt Instrument [Line Items]
Loan variable interest rate						5.375%
Loan variable interest rate option three						5.875%
Base Rate [Member] \| Revolving Credit Facility [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	3.00%
Base Rate [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	3.00%
Term Loans and Delayed Draw Term Loans [Member]
Debt Instrument [Line Items]
Floor interest rate	1.00%
Term Loans and Delayed Draw Term Loans [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loans Amortize Rate	1.00%
Quarterly installment	$ 800
Term Loans and Delayed Draw Term Loans [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Floor interest rate	1.00%
Term Loans and Delayed Draw Term Loans [Member] \| Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loans Amortize Rate	1.00%
Term Loans and Delayed Draw Term Loans [Member] \| Adjusted Eurocurrency Rate [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	6.50%
Term Loans and Delayed Draw Term Loans [Member] \| Adjusted Eurocurrency Rate [Member] \| Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	6.50%
Term Loans and Delayed Draw Term Loans [Member] \| Base Rate [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	5.50%
Term Loans and Delayed Draw Term Loans [Member] \| Base Rate [Member] \| Subsequent Event [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Loan variable interest rate	5.50%
First Lien Facility [Member]
Debt Instrument [Line Items]
Initial term loan borrowing			340,000
Term loan maturity date					Dec. 09, 2022	Dec. 09, 2022
Payments for loans						$ 2,100
Debt instrument, date of first required payment						Mar. 31, 2017
Quarterly installment						$ 4,300
Term loan balloon payment						$ 259,300
Term loan interest rate per annum during period						5.875%	5.875%
Loan variable interest rate						0.00%
Term loan description of variable rate basis						For each interest period, the interest rate per annum was 5.875% plus the Adjusted Eurocurrency Rate which was defined as an amount equal to the Statutory Reserve Rate multiplied by the greatest of a) LIBOR, b) 0.00% per annum and c) solely with respect to the Initial Term Loans, 1.00% per annum.
Term loan balance due						$ 289,000	$ 306,000
First Lien Facility [Member] \| 2016 Credit Agreement [Member]
Debt Instrument [Line Items]
Original issue discount			11,900
First Lien Facility [Member] \| Adjusted Eurocurrency Rate [Member]
Debt Instrument [Line Items]
Loan variable interest rate						1.00%	2.596%
First Lien Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Loan variable interest rate						1.00%
Second Lien Facility [Member]
Debt Instrument [Line Items]
Initial term loan borrowing			125,000			$ 125,000
Term loan maturity date					Dec. 09, 2023	Dec. 09, 2023
Term loan interest rate per annum during period						10.00%
Loan variable interest rate						0.00%
Loss on debt extinguishment							$ 7,200
Second Lien Facility [Member] \| 2016 Credit Agreement [Member]
Debt Instrument [Line Items]
Original issue discount			$ 6,300
Second Lien Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Loan variable interest rate						1.00%
Convertible Debentures Due 2024 [Member]
Debt Instrument [Line Items]
Total debt					$ 221,115	$ 214,541	$ 200,000
Term loan maturity date		Dec. 19, 2024
Debt principal amount		$ 200,000
Debt interest rate		8.00%
Debt interest rate in cash		4.00%
Debt interest rate in kind		4.00%
Debt periodic payment					and bear interest at an annual rate of 4.00% in cash, payable quarterly, and 4.00% in kind, accrued quarterly, on the last business day of March, June, September and December.	The Debentures will bear interest at an annual rate of 4.00% in cash, payable quarterly, and 4.00% in kind, accrued quarterly, on the last business day of March, June, September and December.
Percentage of amount will add to principal amount					3.00%	3.00%
Principal amount of debt redeemed		100.00%
Debt conversion price per share		$ 18
Percentage of principal amount paid in event of default					25.00%	25.00%
Original issue discount		$ 13,700
Deferred closing fees		$ 900