Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

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

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No definition available.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The amount of business acquisition cost of acquired entity debt issued on the date of acquisition.

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No definition available.

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Business acquisition number of installments to payment of purchase consideration.

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No definition available.

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Amount of business acquisition principal installments payable at cost of acquired by entity at accrued interest.

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No definition available.

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Amount of net tangible asset acquired at the acquisition date.

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No definition available.

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Useful life of acquired finite-lived intangible assets in business combination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

This element represents the fair value of the redeemable noncontrolling interest in the acquiree at the acquisition date.

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No definition available.

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- Definition

The amount of non-competition agreements recognized as of the acquisition date.

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No definition available.

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- Definition

Amount of referral relationships at the acquisition date.

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No definition available.

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The amount of tradename recognized as of the acquisition date.

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No definition available.

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- References

No definition available.

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Represents number of acquired operation combined by the entity during the period.

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No definition available.

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Number of clinics consolidated with the existing clinics during the period.

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No definition available.

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Number of clinics operates as a satellite clinic with existing partnerships during the period.

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No definition available.

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Refers to number of management contracts.

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No definition available.

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Represents number of subsidiaries of the entity acquired clinic practices during the period.

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No definition available.

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Payments to acquire businesses total consideration.

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No definition available.

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Acquisitions of Businesses (Details)													12 Months Ended
Acquisitions of Businesses (Details)	Oct. 31, 2017 USD ($) Clinic Installment	Jun. 30, 2017 USD ($) Clinic Installment	May 31, 2017 USD ($) Clinic Installment	Mar. 23, 2017 USD ($)	Jan. 01, 2017 USD ($) Clinic Installment	Nov. 30, 2016 USD ($) Clinic Installment	Feb. 29, 2016 USD ($) Clinic Installment	Dec. 31, 2015 USD ($) Clinic Installment	Aug. 31, 2015 USD ($)	Jun. 30, 2015 USD ($) Clinic	Apr. 30, 2015 USD ($) Clinic Installment	Jan. 31, 2015 USD ($) Clinic Installment	Dec. 31, 2017 USD ($) Clinic Contract Operation	Dec. 31, 2016 USD ($) Clinic Subsidiary	Dec. 31, 2015 USD ($) Clinic
Business Acquisition [Line Items]
Number of management contracts \| Contract													2
Number of clinics consolidated with an existing clinic \| Clinic													1
Number of clinics that operate as a satellite clinic with existing partnerships \| Clinic													1
Percentage of interest acquired													35.00%
Number of clinics \| Clinic													2
Seller notes issued for acquisition of interest in clinic								$ 1,800,000					$ 2,150,000	$ 1,000,000	$ 1,800,000
Number of acquired operations combined \| Operation													2
Cash paid, net of cash acquired													$ 36,682,000	23,623,000	18,965,000
Seller notes								1,800,000					2,150,000	1,000,000	1,800,000
Total consideration								20,765,000					38,832,000	24,623,000	20,765,000
Estimated fair value of net tangible assets acquired: [Abstract]
Total current assets								1,952,000					6,248,000	1,372,000	1,952,000
Total non-current assets								1,068,000					1,818,000	839,000	1,068,000
Total liabilities								(1,067,000)					(2,909,000)	(399,000)	(1,067,000)
Net tangible assets acquired								1,953,000					5,157,000	1,812,000	1,953,000
Referral relationships								3,655,000					3,885,000	4,919,000	3,655,000
Non-compete								594,000					1,224,000	847,000	594,000
Tradename								3,417,000					8,439,000	3,802,000	3,417,000
Goodwill								23,437,000					44,292,000	32,123,000	23,437,000
Fair value of non-controlling interest (classified as redeemable non-controlling interests)													(13,883,000)
Fair value of non-controlling interest (originally classified as mandatorily redeemable non-controlling interests)								(12,291,000)					(10,282,000)	(18,880,000)	(12,291,000)
Total consideration								$ 20,765,000					$ 38,832,000	$ 24,623,000	$ 20,765,000
Minimum [Member]
Business Acquisition [Line Items]
Percentage of interest acquired								5.00%						2.00%	5.00%
Maximum [Member]
Business Acquisition [Line Items]
Percentage of interest acquired								35.00%						35.00%	35.00%
Referral Relationships [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles													7 years 6 months
Referral Relationships [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles													13 years
Non-compete Agreements [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles													5 years
Non-compete Agreements [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles													6 years
Tradenames [Member]
Business Acquisition [Line Items]
Estimated useful lives of acquired intangibles													6 years
February 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest														$ 194,000
February 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest														$ 194,000
Acquisition of Seventeen Clinic Practices [Member]
Business Acquisition [Line Items]
Percentage of interest acquired														70.00%
Number of clinics \| Clinic					17
Cash paid for acquisition of interest in clinic					$ 10,700,000
Seller notes issued for acquisition of interest in clinic														$ 500,000
Business acquisition number of installments to payment of purchase consideration \| Installment					2
Seller notes														$ 500,000
Acquisition of Seventeen Clinic Practices [Member] \| January 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest					$ 250,000
Acquisition of Seventeen Clinic Practices [Member] \| January 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest					$ 250,000
Workforce Performance Solutions [Member]
Business Acquisition [Line Items]
Percentage of interest acquired				55.00%
Cash paid for acquisition of interest in clinic				$ 6,200,000
Seller notes issued for acquisition of interest in clinic				400,000
Seller notes				$ 400,000
January 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date													Jan. 01, 2017
Percentage of interest acquired													70.00%
Number of clinics \| Clinic													17
May 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date													May 31, 2017
Percentage of interest acquired													70.00%
Number of clinics \| Clinic													4
June 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date													Jun. 30, 2017
Percentage of interest acquired													60.00%
Number of clinics \| Clinic													9
October 2017 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date													Oct. 31, 2017
Percentage of interest acquired													70.00%
Number of clinics \| Clinic													9
February 2016 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date														Feb. 29, 2016
Percentage of interest acquired														55.00%
Number of clinics \| Clinic														8
November 2016 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date														Nov. 30, 2016
Percentage of interest acquired														60.00%
Number of clinics \| Clinic														12
January 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date															Jan. 31, 2015
Percentage of interest acquired								60.00%							60.00%
Number of clinics \| Clinic															9
April 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date															Apr. 30, 2015
Percentage of interest acquired								70.00%							70.00%
Number of clinics \| Clinic															3
June 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date															Jun. 30, 2015
Percentage of interest acquired								70.00%							70.00%
Number of clinics \| Clinic															4
December 2015 Acquisition [Member]
Business Acquisition [Line Items]
Acquisition date															Dec. 31, 2015
Percentage of interest acquired								59.00%							59.00%
Number of clinics \| Clinic															4
Acquisition Of Single Clinic Practice [Member]
Business Acquisition [Line Items]
Percentage of interest acquired									60.00%
Cash paid for acquisition of interest in clinic									$ 150,000
Seller notes issued for acquisition of interest in clinic									50,000
Aggregate purchase price for the acquired clinic practices														$ 75,000
Number of subsidiaries acquired clinic practices \| Subsidiary														2
Seller notes									50,000
Acquisition Of Single Clinic Practice [Member] \| August 2016 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest									$ 50,000
Acquisition Of Three Clinic Practices [Member]
Business Acquisition [Line Items]
Percentage of interest acquired											70.00%
Number of clinics \| Clinic											3
Cash paid for acquisition of interest in clinic											$ 4,700,000
Seller notes issued for acquisition of interest in clinic											$ 150,000
Business acquisition number of installments to payment of purchase consideration \| Installment											2
Seller notes											$ 150,000
Acquisition Of Three Clinic Practices [Member] \| April 2016 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest											75,000
Acquisition Of Three Clinic Practices [Member] \| April 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest											$ 75,000
Acquisition Of Four Clinic Practices [Member]
Business Acquisition [Line Items]
Percentage of interest acquired			70.00%					59.00%		70.00%					59.00%
Number of clinics \| Clinic			4					4		4
Cash paid for acquisition of interest in clinic			$ 2,300,000					$ 4,600,000		$ 3,600,000
Seller notes issued for acquisition of interest in clinic			$ 250,000					$ 400,000		700,000					$ 400,000
Business acquisition number of installments to payment of purchase consideration \| Installment			2					2
Seller notes			$ 250,000					$ 400,000		700,000					$ 400,000
Acquisition Of Four Clinic Practices [Member] \| May 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest			125,000
Acquisition Of Four Clinic Practices [Member] \| May 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest			$ 125,000
Acquisition Of Four Clinic Practices [Member] \| June 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest										$ 700,000
Acquisition Of Four Clinic Practices [Member] \| December 2016 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest								200,000
Acquisition Of Four Clinic Practices [Member] \| December 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest								$ 200,000
Acquisition Of Eight Clinic Practices [Member]
Business Acquisition [Line Items]
Percentage of interest acquired							55.00%
Number of clinics \| Clinic							8
Cash paid for acquisition of interest in clinic							$ 13,200,000
Seller notes issued for acquisition of interest in clinic							$ 500,000
Business acquisition number of installments to payment of purchase consideration \| Installment							2
Seller notes							$ 500,000
Acquisition Of Eight Clinic Practices [Member] \| February 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest							250,000
Acquisition Of Eight Clinic Practices [Member] \| February 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest							$ 250,000
Acquisition Of Nine Clinic Practices [Member]
Business Acquisition [Line Items]
Percentage of interest acquired	70.00%	60.00%										60.00%
Number of clinics \| Clinic	9	9										9
Cash paid for acquisition of interest in clinic	$ 4,000,000	$ 15,800,000										$ 6,700,000
Seller notes issued for acquisition of interest in clinic	$ 500,000	$ 500,000										$ 500,000
Business acquisition number of installments to payment of purchase consideration \| Installment	2	2										2
Seller notes	$ 500,000	$ 500,000										$ 500,000
Acquisition Of Nine Clinic Practices [Member] \| June 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest		250,000
Acquisition Of Nine Clinic Practices [Member] \| June 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest		$ 250,000
Acquisition Of Nine Clinic Practices [Member] \| October 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest	250,000
Acquisition Of Nine Clinic Practices [Member] \| October 2019 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest	$ 250,000
Acquisition Of Nine Clinic Practices [Member] \| January 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest												$ 250,000
Acquisition Of Twelve Clinic Practices [Member]
Business Acquisition [Line Items]
Percentage of interest acquired						60.00%
Number of clinics \| Clinic						12
Cash paid for acquisition of interest in clinic						$ 11,000,000
Seller notes issued for acquisition of interest in clinic						$ 500,000
Business acquisition number of installments to payment of purchase consideration \| Installment						2
Seller notes						$ 500,000
Acquisition Of Twelve Clinic Practices [Member] \| November 2017 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest						250,000
Acquisition Of Twelve Clinic Practices [Member] \| November 2018 [Member]
Business Acquisition [Line Items]
Acquisition cost payable in two principal installments including accrued interest						$ 250,000