RELATED-PARTY TRANSACTIONS - Schedule of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Adviser
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	$ 1,992	$ 2,070	$ 6,040	$ 6,303
Base management fee \| Adviser
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	1,992	2,070	6,040	6,303
Incentive fee \| Adviser
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	0	109	0	109
Incentive fee waiver \| Adviser
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	0	(109)	0	(109)
Administration fee
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	650	683	1,863	1,839
Total fees to Gladstone Securities \| Gladstone Securities
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	0	9	15	39
Selling Commissions and Dealer Management Fees \| Gladstone Securities
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	0	9	0	39
Financing fees
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	0	0	15	0
Financing fees \| Gladstone Securities
Related Party Transaction [Line Items]
Total fees to Gladstone Securities	$ 0	$ 0	$ 15	$ 0

GLADSTONE LAND Corp 10-Q