The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Annual limit occupational therapy services.

+ References

No definition available.

+ Details

Name:	usph_AnnualLimitOccupationalTherapyServices
Namespace Prefix:	usph_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Annual Limit on physical therapy and speech language pathology services.

+ References

No definition available.

+ Details

Name:	usph_AnnualLimitOnPhysicalTherapyAndSpeechLanguagePathologyServices
Namespace Prefix:	usph_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	usph_BasisOfPresentationAndSignificantAccountingPoliciesAdditionalTextualAbstract
Namespace Prefix:	usph_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	usph_BasisOfPresentationAndSignificantAccountingPoliciesTextualAbstract
Namespace Prefix:	usph_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Combined physical therapy/speech language pathology expenses.

+ References

No definition available.

+ Details

Name:	usph_CombinedPhysicalTherapySpeechLanguagePathologyExpenses
Namespace Prefix:	usph_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between net revenues and corresponding cash collections reflected percentage of net revenues.

+ References

No definition available.

+ Details

Name:	usph_DifferenceBetweenNetRevenuesAndCorrespondingCashCollectionsReflectedPercentageOfNetRevenues
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Expected increase on outpatient physician therapy service payments.

+ References

No definition available.

+ Details

Name:	usph_ExpectedIncreaseOnOutpatientPhysicianTherapyServicePayments
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Expected increase on outpatient physician therapy service payments derived from physician practice information survey.

+ References

No definition available.

+ Details

Name:	usph_ExpectedIncreaseOnOutpatientPhysicianTherapyServicePaymentsDerivedFromPhysicianPracticeInformationSurvey
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum difference between actual aggregate contractual reserve percentage as compared to estimated contractual allowance reserve percentage.

+ References

No definition available.

+ Details

Name:	usph_MaximumDifferenceBetweenActualAggregateContractualReservePercentagesAsComparedToEstimatedContractualAllowanceReservePercentage
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of change in contractual allowance reserve estimate.

+ References

No definition available.

+ Details

Name:	usph_MaximumPercentageOfChangeInContractualAllowanceReserveEstimate
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum percentage of fair value reporting unit less than carrying amount.

+ References

No definition available.

+ Details

Name:	usph_MinimumPercentageOfFairValueReportingUnitLessThanCarryingAmount
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of clinics closed.

+ References

No definition available.

+ Details

Name:	usph_NumberOfClinicsClosed
Namespace Prefix:	usph_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of clinics opened.

+ References

No definition available.

+ Details

Name:	usph_NumberOfClinicsOpened
Namespace Prefix:	usph_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of clinics operated.

+ References

No definition available.

+ Details

Name:	usph_NumberOfClinicsOperated
Namespace Prefix:	usph_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of physician services facilities.

+ References

No definition available.

+ Details

Name:	usph_NumberOfPhysicianServicesFacilities
Namespace Prefix:	usph_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage increase to Medicare physician fee schedule payment rates.

+ References

No definition available.

+ Details

Name:	usph_PercentageIncreaseToMedicarePhysicianFeeSchedulePaymentRates
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of general partnership interest owned.

+ References

No definition available.

+ Details

Name:	usph_PercentageOfGeneralPartnershipInterestOwned
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of limited partnership interest owned.

+ References

No definition available.

+ Details

Name:	usph_PercentageOfLimitedPartnershipInterestOwned
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of practice expense component of relative value unit.

+ References

No definition available.

+ Details

Name:	usph_PercentageOfPracticeExpenseComponentOfRelativeValueUnit
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of reduction prevented.

+ References

No definition available.

+ Details

Name:	usph_PercentageOfReductionPrevented
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage reduction for service in institutional settings.

+ References

No definition available.

+ Details

Name:	usph_PercentageReductionForServiceInInstitutionalSettings
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage reduction for service in office or other non institutional settings.

+ References

No definition available.

+ Details

Name:	usph_PercentageReductionForServiceInOfficeOrOtherNonInstitutionalSettings
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage reduction to Medicare physical fee schedule payment rates.

+ References

No definition available.

+ Details

Name:	usph_PercentageReductionToMedicarePhysicalFeeSchedulePaymentRates
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Suspended reduction to Medicare physician fee schedule payment rates.

+ References

No definition available.

+ Details

Name:	usph_SuspendedReductionToMedicarePhysicianFeeSchedulePaymentRates
Namespace Prefix:	usph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Basis of Presentation and Significant Accounting Policies (Details Textual) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Jan. 03, 2012 Clinic	Sep. 30, 2011	Jun. 30, 2012 Clinic State	Jun. 30, 2012 Facility Clinic State	Dec. 31, 2011	May 22, 2012	Mar. 31, 2012
Basis of Presentation and Significant Accounting Policies (Additional Textual) [Abstract]
Percentage of general partnership interest owned				1.00%
Percentage of limited partnership interest owned				64.00%
Number of clinic acquired	2		2
Acquisition of interest in clinic practice	100.00%					70.00%	65.00%
Number of clinics opened			3	5
Number of clinics closed			5	11
Number of clinics operated			419	419
Number of states where clinics are operated			42	42
Percentage increase to MPFS payment rates					2.20%
Suspended reduction to MPFS payment rates					21.30%
Percentage reduction to MPFS payment rates					25.50%
Percentage of reduction prevented				27.40%
Expected increase on outpatient physician therapy service payments			4.00%	4.00%
Expected increase on outpatient physician therapy service payments derived from PPIS			6.00%	6.00%
Annual Limit on physical therapy and speech language pathology services				$ 1,880
Annual Limit occupational therapy services				1,880
Percentage of practice expense component				100.00%
Percentage reduction for service				20.00%
Percentage reduction for service in institutional settings				25.00%
Number of physician services facilities				2
Difference between net revenues and corresponding cash collections, approximately of net revenues				1.00%
Maximum difference between actual aggregate contractual reserve and estimated contractual allowance reserve				1.00%
Maximum percentage of change not likely be more in contractual allowance reserve estimate			1.00%	1.00%
Minimum percentage of fair value reporting unit less than carrying amount		50.00%
Maximum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Combined physical therapy/speech language pathology expenses				$ 3,700
Furniture & equipment [Member] \| Maximum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Estimated useful lives				8 years
Furniture & equipment [Member] \| Minimum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Estimated useful lives				3 years
Software [Member] \| Maximum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Estimated useful lives				7 years
Software [Member] \| Minimum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Estimated useful lives				3 years
Leasehold improvements [Member] \| Maximum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Estimated useful lives				5 years
Leasehold improvements [Member] \| Minimum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]
Estimated useful lives				3 years