FIRST BANCORP. (Holding Company Only) Financial Information - Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income:
Interest income on money market investments	$ 27,110	$ 23,247
Expense:
Income tax expense	31,935	43,025
Net income	70,698	82,600
Other comprehensive (loss) income, net of tax	87,228	(331,834)
Comprehensive income (loss)	157,926	(249,234)
Holding Company [Member]
Income:
Interest income on money market investments	53	4
Dividend income	78,870	63,593
Other income	102	40
Total income	79,025	63,637
Expense:
Other borrowings	3,381	1,333
Other operating expenses	410	439
Total expenses	3,791	1,772
Income before income taxes and equity in undistributed earnings of subsidiaries	75,234	61,865
Income tax expense	1,078	1,106
Equity in undistributed earnings of subsidiaries (distributions in excess of earnigs)	(3,458)	21,841
Net income	70,698	82,600
Other comprehensive (loss) income, net of tax	87,228	(331,834)
Comprehensive income (loss)	$ 157,926	$ (249,234)