XML 62 R37.htm IDEA: XBRL DOCUMENT
v3.25.0.1

LEASES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
LEASES |
Summary of components of our lease cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | December 31,
(in thousands) | 2024 |  | 2023 |  | 2022
LEASE COST | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FINANCE LEASE COST: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of right-of-use assets | $ | — | ​ | $ | — | ​ | $ | 14
Interest on lease obligation |  | — | ​ |  | — | ​ |  | 1
Total finance lease cost | ​ | — | ​ | ​ | — | ​ | ​ | 15
OPERATING LEASE COST: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total long-term operating lease cost |  | 367 | ​ |  | 365 | ​ |  | 387
Total short-term operating lease cost |  | 788 | ​ |  | 368 | ​ |  | 592
TOTAL LEASE COST | $ | 1,155 | ​ | $ | 733 | ​ | $ | 994
Schedule of supplemental balance sheet and other information related to leases | ​
​ | ​ | ​ | ​ | ​ | ​
​ | December 31,
(in thousands) | 2024 | ​ | 2023
OPERATING LEASES: | ​ | ​ | ​ | ​ | ​
Operating lease right-of-use assets | $ | 545 | ​ | $ | 826
​ | ​ | ​ | ​ | ​ | ​
Current Portion of Operating Lease Liabilities | ​ | 318 | ​ | ​ | 320
Long-Term Operating Lease Liabilities | ​ | 227 | ​ | ​ | 506
TOTAL OPERATING LEASE LIABILITIES | $ | 545 | ​ | $ | 826
Schedule of weighted average lease term and weighted average discount rate of leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ | ​ | 2024 | ​ | 2023
WEIGHTED-AVERAGE REMAINING LEASE TERM (YEARS): | ​ | ​ | ​ | ​ | ​ | ​
Operating leases | ​ | 2.0 | ​ | ​ | 2.7 | ​
Finance leases | ​ | — | ​ | ​ | — | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
WEIGHTED-AVERAGE DISCOUNT RATE: | ​ | ​ | ​ | ​ | ​ | ​
Operating leases | ​ | 3.5 | % | ​ | 3.5 | %
Schedule of supplemental cash flow information related to leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | December 31,
(in thousands) | 2024 | ​ | 2023 | ​ | 2022
OTHER INFORMATION: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash paid for amounts included in the measurement of lease obligation: |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating cash flows from operating leases | $ | 367 | ​ | $ | 365 | ​ | $ | 387
Financing cash flows from finance leases | ​ | — | ​ | ​ | — | ​ | ​ | 15
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Right-of-use assets obtained in exchange for new operating lease obligations | ​ | — | ​ | ​ | — | ​ | ​ | 117
Summary of maturities of operating lease liabilities | ​
​ | ​ | ​
​ | ​ | ​
​ | ​ | ​
(in thousands) | Operating Lease Obligations
Remaining lease payments to be paid during the year ended December 31, | ​ | ​
2025 | $ | 347
2026 | ​ | 161
2027 |  | 54
2028 |  | 39
Thereafter |  | 11
Total lease payments | ​ | 612
Less imputed interest | ​ | (67)
Lease obligation as of December 31, 2024 | $ | 545

X
- Definition Tabular disclosure of supplemental balance sheet information and other information of both finance and operating leases. + References No definition available. + Details
Name: | mlr_ScheduleOfBalanceSheetInformationOfFinanceAndOperatingLeaseTableTextBlock
Namespace Prefix: | mlr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of supplemental cash flow information and other information of both finance and operating leases. + References No definition available. + Details
Name: | mlr_ScheduleOfSupplementalCashFlowInformationOfFinanceAndOperatingLeaseTableTextBlock
Namespace Prefix: | mlr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure containing the weighted average lease term and weighted average discount rate of both operating and finance lease. + References No definition available. + Details
Name: | mlr_ScheduleOfWeightedAverageLeaseTermAndDiscountRateOfOperatingAndFinanceLeaseTableTextBlock
Namespace Prefix: | mlr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration