Details of Certain Balance Sheet Accounts (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Receivables, net [Abstract]
Trade accounts	$ 17,558us-gaap_AccountsReceivableGrossCurrent	$ 14,150us-gaap_AccountsReceivableGrossCurrent
Vendor incentives	35,894pool_VendorIncentivesReceivableCurrent	33,779pool_VendorIncentivesReceivableCurrent
Other, net	1,570us-gaap_OtherReceivablesNetCurrent	1,756us-gaap_OtherReceivablesNetCurrent
Total receivables	55,022pool_ReceivablesGrossCurrent	49,685pool_ReceivablesGrossCurrent
Less allowance for doubtful accounts	(4,008)	(4,547)
Receivables, net	51,014us-gaap_ReceivablesNetCurrent	45,138us-gaap_ReceivablesNetCurrent
Prepaid expenses and other current assets [Abstract]
Prepaid expenses	11,535us-gaap_PrepaidExpenseCurrent	9,670us-gaap_PrepaidExpenseCurrent
Other current assets	124us-gaap_OtherAssetsCurrent	132us-gaap_OtherAssetsCurrent
Prepaid expenses and other current assets	11,659	9,802
Property and equipment, net [Abstract]
Land	1,775us-gaap_Land	1,641us-gaap_Land
Buildings	1,868us-gaap_BuildingsAndImprovementsGross	2,196us-gaap_BuildingsAndImprovementsGross
Leasehold improvements	30,361us-gaap_LeaseholdImprovementsGross	28,048us-gaap_LeaseholdImprovementsGross
Autos and trucks	25,829pool_AutosAndTrucks	19,994pool_AutosAndTrucks
Machinery and equipment	36,001us-gaap_MachineryAndEquipmentGross	30,181us-gaap_MachineryAndEquipmentGross
Computer equipment	36,417pool_ComputerEquipment	34,779pool_ComputerEquipment
Furniture and fixtures	9,266us-gaap_FurnitureAndFixturesGross	8,827us-gaap_FurnitureAndFixturesGross
Fixed assets in progress	4,090pool_FixedAssetsInProgress	4,336pool_FixedAssetsInProgress
Total property and equipment	145,607us-gaap_PropertyPlantAndEquipmentGross	130,002us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation	(89,132)	(77,674)
Property and equipment, net	56,475us-gaap_PropertyPlantAndEquipmentNet	52,328us-gaap_PropertyPlantAndEquipmentNet
Accrued expenses and other current liabilities [Abstract]
Salaries and payroll deductions	6,659pool_AccruedSalariesandPayrollTaxes	5,658pool_AccruedSalariesandPayrollTaxes
Incentive compensation	27,296	26,728
Taxes payable	7,425us-gaap_TaxesPayableCurrent	7,341us-gaap_TaxesPayableCurrent
Other	12,705us-gaap_OtherLiabilitiesCurrent	9,574us-gaap_OtherLiabilitiesCurrent
Accrued expenses and other current liabilities	$ 54,085us-gaap_AccruedLiabilitiesCurrent	$ 49,301us-gaap_AccruedLiabilitiesCurrent

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Balance Type:	na
Period Type:	duration

Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer) and Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).