Organization and Background - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 27, 2024	Dec. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Conversion of stock, shares issued		54,094,232
Payments for merger related costs		$ 55,176
Adjustment of deferred tax asset liability through additional paid in capital		5,973
Shares issued, price per share	$ 14
Stock issued during period, value, new issues	$ 119,784	$ 106,762
Payment of underwriting discounts	9,016
Addition of underwriting discounts incurred of offering costs	$ 13,023
Stockholders' equity note, stock split		one-for-one
Guardian Pharmacy, LLC [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Subsidiary, ownership percentage, parent		100.00%
Common Class B [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Conversion of stock per shares converted		$ 0.001
Right to receive per share cash		1.02
Common Class A [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par or stated value per share		$ 0.001
Stock issued during period, shares, new issues	9,200,000
Percentage Of Conversion Of Share		25.00%
Common Class A [Member] | IPO [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Stock issued during period, shares, new issues	8,000,000
Common Class A [Member] | Additional Paid-in Capital [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Stock issued during period, shares, new issues	1,200,000