Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance (in shares) at Dec. 31, 2016		41,090,000
Balance at Dec. 31, 2016	$ 205,210	$ 41	$ 403,162	$ (183,915)	$ (14,078)
Net income attributable to Pool Corporation	191,633	0	0	191,633	0
Foreign currency translation	5,545	0	0	0	5,545
Interest rate swaps, net of tax	1,205	$ 0	0	0	1,205
Interest rate swap, tax	(769)
Repurchases of common stock, net of retirements (in shares)		(1,353,000)
Repurchases of common stock, net of retirements	(146,006)	$ (1)	0	(146,005)	0
Share-based compensation	12,482	$ 0	12,482	0	0
Issuance of shares under incentive stock plans (in shares)		475,000
Issuance of shares under incentive stock plans	11,466	$ 0	11,466	0	0
Proceeds from stock issued under share-based compensation plans	11,466
Declaration of cash dividends	(58,029)	0	0	(58,029)	0
Redemption value adjustment of redeemable non-controlling interest	(360)	$ 0	(360)	0	0
Balance (in shares) at Dec. 31, 2017		40,212,000
Balance at Dec. 31, 2017	223,146	$ 40	426,750	(196,316)	(7,328)
Net income attributable to Pool Corporation	234,461	0	0		0
Foreign currency translation	(4,945)	0	0	0	(4,945)
Interest rate swaps, net of tax	1,276	$ 0	0	0	1,276
Interest rate swap, tax	(425)
Repurchases of common stock, net of retirements (in shares)		(1,291,000)
Repurchases of common stock, net of retirements	(187,469)	$ 0	0	(187,469)	0
Share-based compensation	12,874	$ 0	12,874	0	0
Issuance of shares under incentive stock plans (in shares)		585,000
Issuance of shares under incentive stock plans	13,569	$ 0		0	0
Proceeds from stock issued under share-based compensation plans	13,569		13,569
Declaration of cash dividends	$ (69,322)	$ 0	0	(69,322)	0
Balance (in shares) at Dec. 31, 2018	39,506,067	39,506,000
Balance at Dec. 31, 2018	$ 223,590	$ 40	453,193	(218,646)	(10,997)
Net income attributable to Pool Corporation	261,575	0	0	261,575	0
Foreign currency translation	2,295	0	0	0	2,295
Interest rate swaps, net of tax	(1,657)	$ 0	0	0	(1,657)
Interest rate swap, tax	552
Repurchases of common stock, net of retirements (in shares)		(155,000)
Repurchases of common stock, net of retirements	(23,188)	$ 0	0	(23,188)	0
Share-based compensation	13,472	$ 0	13,472	0	0
Issuance of shares under incentive stock plans (in shares)		723,000
Issuance of shares under incentive stock plans	18,574	$ 0			0
Proceeds from stock issued under share-based compensation plans	18,574		18,574	0
Declaration of cash dividends	$ (83,772)	$ 0	0	(83,772)	0
Balance (in shares) at Dec. 31, 2019	40,074,160	40,074,000
Balance at Dec. 31, 2019	$ 410,180	$ 40	$ 485,239	$ (64,740)	$ (10,359)