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Acquisitions of Businesses (Details) |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
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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 |  |  |  |  |  |  |  |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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