Main Street Capital Corporation Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Cover
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

SHARE-BASED COMPENSATION - Narrative (Details)

v3.24.1.1.u2

SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share‑based compensation	$ 4,103,000	$ 4,100,000
Restricted Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share‑based compensation	4,100,000	$ 4,100,000
Share-based payment arrangement, nonvested award, vested fair value	0
Share-based payment arrangement, nonvested award, excluding option, cost not yet recognized, amount	$ 22,300,000
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition (in years)	2 years 2 months 12 days
Restricted Stock \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period (in years)	3 years
Restricted Stock \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period (in years)	5 years
Restricted Stock \| Main Street Capital Corporation 2022 Equity and Incentive Plan \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period (in years)	3 years
Restricted Stock \| Main Street Capital Corporation 2022 Equity and Incentive Plan \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period (in years)	5 years

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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