XML 40 R29.htm IDEA: XBRL DOCUMENT v3.20.4

Note 7 - Indebtedness (Tables)

9 Months Ended

Dec. 31, 2020

Notes Tables

Convertible Debt [Table Text Block]

		December 31, 2020				March 31, 2020
Principal outstanding		$	172,500			$	172,500
Unamortized debt discount			(24,696	)			(28,205	)
Unamortized debt issuance costs			(3,502	)			(4,017	)
Net carrying value		$	144,302			$	140,278

		December 31, 2020				March 31, 2020
Amount allocated to conversion option		$	31,073			$	31,073
Less: allocated issuance costs and deferred taxes			(8,338	)			(8,338	)
Equity component, net		$	22,735			$	22,735

Interest Expense on Convertible Debt [Table Text Block]

		Three Months Ended December 31,								Nine Months Ended December 31,
		2020				2019				2020				2019
Coupon interest expense at 1.375%		$	593			$	593			$	1,779			$	909
Amortization of debt discounts and issuance costs			1,357				1,295				4,024				2,002
Total		$	1,950			$	1,888			$	5,803			$	2,911

X

- Definition

Tabular disclosure of interest expense on borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder.

+ References

No definition available.

+ Details

Name:	mlab_InterestExpenseOnConvertibleDebtTableTextBlock
Namespace Prefix:	mlab_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components.

+ References

No definition available.

+ Details

Name:	us-gaap_ConvertibleDebtTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration