Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Lessor, Lease, Description [Line Items]
Finance and Operating Lease Assets	$ 5,126	$ 4,805
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	1,045
Finance Lease, Liability, Payments, Remainder of Fiscal Year	33
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two	1,650
Lessee, Operating Lease, Liability, Payments, Due Year Three	1,523
Finance Lease, Liability, Payments, Due Year Three	52
Finance Lease, Liability, Payments, Due Year Four	26
Lessee, Operating Lease, Liability, Payments, Due Year Five	994
Finance Lease, Liability, Payments, Due Year Five	6
Finance Lease Liability Payments Due Year Six	5
Lessee Operating Lease Liability Payments Due Year Six	701
Lessee Operating Lease Liability Payments Due After Year Six	918
Finance Lease, Liability, Payments, Due after Year Five	1
Lessee, Operating Lease, Liability, Payments, Due	6,831
Finance Lease, Liability, Payment, Due	123
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(661)
Finance Lease, Liability, Undiscounted Excess Amount	(10)
Operating Lease, Liability	6,170
Finance Lease, Liability	113
Finance and Operating Lease Liabilities	$ 6,283	5,945
Operating Lease, Weighted Average Remaining Lease Term	4 years 3 months
Operating Lease, Weighted Average Discount Rate, Percent	4.00%
Finance Lease, Weighted Average Remaining Lease Term	2 years 5 months 12 days
Finance Lease, Weighted Average Discount Rate, Percent	5.20%
Property, Plant and Equipment, Type [Domain]
Lessor, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset	$ 154	180
Accrued Expenses [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Liability, Current	1,612	1,493
Current portion of capital leases [Member]
Lessor, Lease, Description [Line Items]
Finance Lease, Liability, Current	56	68
Other longterm liabilities [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Liability, Noncurrent	4,558	4,318
Finance Lease, Liability, Noncurrent	57	66
Other Assets [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 4,972	$ 4,625

Finance and Operating Lease Assets

No definition available.

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- Definition

Finance and Operating Lease Liabilities

+ References

No definition available.

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Namespace Prefix:	mtex_
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Balance Type:	credit
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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

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Amount of lessee's undiscounted obligation for lease payments for finance lease.

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- Definition

Amount of lessee's undiscounted obligation for lease payments for finance lease, due after fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fourth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in third rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payments for finance lease, due in second rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.

+ References

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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

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-Publisher FASB
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- Definition

Weighted average discount rate for finance lease calculated at point in time.

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- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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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.

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No definition available.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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