BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
Mar. 31, 2018
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Cash Equivalents	Cash Equivalents The Company maintains its cash and cash equivalents at financial institutions. The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. The combined account balances at several institutions typically exceed Federal Deposit Insurance Corporation (“FDIC”) insurance coverage and, as a result, there is a concentration of credit risk related on deposits in excess of FDIC insurance coverage. Management believes that the risk is not significant.
Long-Lived Assets	Long-Lived Assets Fixed assets are stated at cost. Depreciation is computed on the straight-line method over the estimated useful lives of the assets. Estimated useful lives for furniture and equipment range from three to eight years and for purchased software from three to seven years. Leasehold improvements are amortized over the shorter of the lease term or estimated useful lives of the assets, which is generally three to five years.
Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of	Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of The Company reviews property and equipment and intangible assets with finite lives for impairment upon the occurrence of certain events or circumstances which indicate that the amounts may be impaired. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.
Goodwill	Goodwill Goodwill represents the excess of the amount paid and fair value of the non-controlling interests over the fair value of the acquired business assets, which include certain identifiable intangible assets. Historically, goodwill has been derived from acquisitions and, prior to 2009, from the purchase of some or all of a particular local management’s equity interest in an existing clinic. Effective January 1, 2009, if the purchase price of a non-controlling interest by the Company exceeds or is less than the book value at the time of purchase, any excess or shortfall is recognized as an adjustment to additional paid-in capital. The fair value of goodwill and other identifiable intangible assets with indefinite lives are tested for impairment annually and upon the occurrence of certain events, and are written down to fair value if considered impaired. The Company evaluates goodwill for impairment on at least an annual basis (in its third quarter) by comparing the fair value of its reporting units to the carrying value of each reporting unit including related goodwill. The Company evaluates indefinite lived tradenames using the relief from royalty method in conjunction with its annual goodwill impairment test. The Company operates a one segment business which is made up of various clinics within partnerships. The partnerships are components of regions and are aggregated to the operating segment level for the purpose of determining the Company’s reporting units when performing its annual goodwill impairment test. In the first quarter of 2018, there were six regions. In addition to the six regions, in 2017, the impairment test included a separate analysis for the industrial injury prevention business, a separate reporting unit. An impairment loss generally would be recognized when the carrying amount of the net assets of a reporting unit, inclusive of goodwill and other identifiable intangible assets, exceeds the estimated fair value of the reporting unit. The estimated fair value of a reporting unit is determined using two factors: (i) earnings prior to taxes, depreciation and amortization for the reporting unit multiplied by a price/earnings ratio used in the industry and (ii) a discounted cash flow analysis. A weight is assigned to each factor and the sum of each weight times the factor is considered the estimated fair value. For 2017, the factors (i.e., price/earnings ratio, discount rate and residual capitalization rate) were updated to reflect current market conditions. The evaluation of goodwill in 2017, 2016 and 2015 did not result in any goodwill amounts that were deemed impaired. The Company has not identified any triggering events occurring after the testing date that would impact the impairment testing results obtained. The Company will continue to monitor for any triggering events or other indicators of impairment.
Redeemable Non-Controlling Interests	Redeemable Non-Controlling Interests The non-controlling interests that are reflected as redeemable non-controlling interests in the consolidated financial statements consist of those that the owners and the Company have certain redemption rights, whether currently exercisable or not, and which currently, or in the future, require that the Company purchase or the owner sell the non-controlling interest held by the owner, if certain conditions are met. The purchase price is derived at a predetermined formula based on a multiple of trailing twelve months earnings performance as defined in the respective limited partnership agreements. The redemption rights can be triggered by the owner or the Company at such time as both of the following events have occurred: 1) termination of the owner’s employment, regardless of the reason for such termination, and 2) the passage of specified number of years after the closing of the transaction, typically three to five years, as defined in the limited partnership agreement. The redemption rights are not automatic or mandatory (even upon death) and require either the owner or the Company to exercise its rights when the conditions triggering the redemption rights have been satisfied. On the date the Company acquires a controlling interest in a partnership, and the limited partnership agreement for such partnership contains redemption rights not under the control of the Company, the fair value of the non-controlling interest is recorded in the consolidated balance sheet under the caption – Redeemable non-controlling interests. Then, in each reporting period thereafter until it is purchased by the Company, the redeemable non-controlling interest is adjusted to the greater of its then current redemption value or initial value, based on the predetermined formula defined in the respective limited partnership agreement. As a result, the value of the non-controlling interest is not adjusted below its initial value. The Company records any adjustment in the redemption value, net of tax, directly to retained earnings and are not reflected in the consolidated statements of income. Although the adjustments are not reflected in the consolidated statements of income, current accounting rules require that the Company reflects the adjustments, net of tax, in the earnings per share calculation. The amount of net income attributable to redeemable non-controlling interest owners is included in consolidated net income on the face of the consolidated statement of income. Management believes the redemption value (i.e. the carrying amount) and fair value are the same.
Non-Controlling Interests	Non-Controlling Interests The Company recognizes non-controlling interests, in which the Company has no obligation but the right to purchase the non-controlling interests, as equity in the consolidated financial statements separate from the parent entity’s equity. The amount of net income attributable to non-controlling interests is included in consolidated net income on the face of the statements of net income. Changes in a parent entity’s ownership interest in a subsidiary that do not result in deconsolidation are treated as equity transactions if the parent entity retains its controlling financial interest. The Company recognizes a gain or loss in net income when a subsidiary is deconsolidated. Such gain or loss is measured using the fair value of the non-controlling equity investment on the deconsolidation date. When the purchase price of a non-controlling interest by the Company exceeds the book value at the time of purchase, any excess or shortfall is recognized as an adjustment to additional paid-in capital. Additionally, operating losses are allocated to non-controlling interests even when such allocation creates a deficit balance for the non-controlling interest partner.
Revenue Recognition	Revenue Recognition Revenues are recognized in the period in which services are rendered. See Footnote 3 for further discussion of revenue recognition.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The Company determines allowances for doubtful accounts based on the specific agings and payor classifications at each clinic. The provision for doubtful accounts is included in operating costs in the statement of net income. Net accounts receivable, which are stated at the historical carrying amount net of contractual allowances, write-offs and allowance for doubtful accounts, includes only those amounts the Company estimates to be collectible.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company recognizes the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount to be recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. The Tax Cuts and Jobs Act of 2017 (the “TCJA”) was passed by Congress on December 20, 2017 and signed into law by President Trump on December 22, 2017. The TCJA makes significant changes to U.S. corporate income tax laws including a decrease in the corporate income tax rate to 21% effective January 1, 2018. The Company did not have any accrued interest or penalties associated with any unrecognized tax benefits nor was any interest expense recognized during the twelve months ended March 31, 2018. The Company will book any interest or penalties, if required, in interest and other expense, as appropriate.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts reported in the balance sheets for cash and cash equivalents, accounts receivable, accounts payable and notes payable approximate their fair values due to the short-term maturity of these financial instruments. The carrying amount under the Amended Credit Agreement approximates its fair value. The interest rate on the Amended Credit Agreement, which is tied to the Eurodollar Rate, is set at various short-term intervals, as detailed in the Amended Credit Agreement.
Segment Reporting	Segment Reporting Operating segments are components of an enterprise for which separate financial information is available that is evaluated regularly by chief operating decision makers in deciding how to allocate resources and in assessing performance. The Company identifies operating segments based on management responsibility and believes it meets the criteria for aggregating its operating segments into a single reporting segment.
Use of Estimates	Use of Estimates In preparing the Company’s consolidated financial statements, management makes certain estimates and assumptions, especially in relation to, but not limited to, purchase accounting, goodwill impairment, allowance for receivables, tax provision and contractual allowances, that affect the amounts reported in the consolidated financial statements and related disclosures. Actual results may differ from these estimates.
Self-Insurance Program	Self-Insurance Program The Company utilizes a self-insurance plan for its employee group health insurance coverage administered by a third party. Predetermined loss limits have been arranged with the insurance company to minimize the Company’s maximum liability and cash outlay. Accrued expenses include the estimated incurred but unreported costs to settle unpaid claims and estimated future claims. Management believes that the current accrued amounts are sufficient to pay claims arising from self-insurance claims incurred through March 31, 2018.
Restricted Stock	Restricted Stock Restricted stock issued to employees and directors is subject to continued employment or continued service on the board, respectively. Generally, restrictions on the stock granted to employees, other than officers, lapse in equal annual installments on the following four anniversaries of the date of grant. For those shares granted to directors, the restrictions will lapse in equal quarterly installments during the first year after the date of grant. For those granted to officers, the restriction will lapse in equal quarterly installments during the four years following the date of grant. Compensation expense for grants of restricted stock is recognized based on the fair value per share on the date of grant amortized over the vesting period. The restricted stock issued is included in basic and diluted shares for the earnings per share computation.
Recently Adopted Accounting Guidance	Recently Adopted Accounting Guidance In May 2014, March 2016, April 2016, and December 2016, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, ASU 2016-08, Revenue from Contracts with Customers, Principal versus Agent Considerations, ASU 2016-10, Revenue from Contracts with Customers, Identifying Performance Obligations and Licensing, ASU 2016-12, Revenue from Contracts with Customers, Narrow Scope Improvements and Practical Expedients, and ASU 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customer (collectively “the standards”), respectively, which supersede most of the current revenue recognition requirements. The core principle of the new guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. New disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers are also required. The original standards were effective for fiscal years beginning after December 15, 2016; however, in July 2015, the FASB approved a one-year deferral of these standards, with a new effective date for fiscal years beginning after December 15, 2017. The standards require the selection of a retrospective or cumulative effect transition method. The Company implemented the new standard beginning January 1, 2018 using a modified retrospective transition method. Adoption of the new standard did not result in material changes to the presentation of net revenues and bad debt expense in the consolidated statements of income, and the presentation of the amount of income from operations and net income will be unchanged upon adoption of the new standards. The principal change relates to how the new standard requires healthcare providers to estimate the amount of variable consideration to be included in the transaction price up to an amount which is probable that a significant reversal will not occur. The most common forms of variable consideration the Company experiences are amounts for services provided that are ultimately not realizable from a customer. Under the current standards, the Company’s estimate for unrealizable amounts is recorded as a reduction of revenue. Under the new standards, the Company’s estimate for unrealizable amounts will continue to be recognized as a reduction to revenue. The bad debt expense historically reported will not materially change.
Recently Issued Accounting Guidance	Recently Issued Accounting Guidance In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment (Topic 350), which eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment change. ASU 2017-04 is effective prospectively for fiscal years, and the interim periods within those years, beginning after December 15, 2019. The Company does not expect adoption of this ASU to have a material impact. In February 2016, the FASB issued amended accounting guidance (ASU 2016-02, Leases) which replaced most existing lease accounting guidance under U. S. generally accepted accounting principles. Among other changes, the amended guidance requires that a right-to-use asset, which is an asset that represents the lessee’s right to use, and a lease liability, which is a lessee’s obligation to make lease payments arising for a lease measured on a discounted basis, be recognized on the balance sheet by lessees for those leases with a term of greater than 12 months. The amended guidance is effective for reporting periods beginning after December 15, 2018; however, early adoption is permitted. Entities can use to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements or recognize the cumulative effect of applying the new standard as an adjustment to the opening balance of retained earnings. Since the Company leases all but one of its clinic facilities, upon adoption, the Company will recognize significant assets and liabilities on the consolidated balance sheets as a result of the operating lease obligations of the Company. Operating lease expense will continue to be recognized as rent expense on a straight-line basis over the respective lease terms in the consolidated statements of income. The Company will implement the new standard beginning January 1, 2019. The Company’s implementation efforts are focused on populating the data in a lease accounting software package and developing internal controls in order to account for its leases under the new standard.
Subsequent Event	Subsequent Event The Company has evaluated events occurring after the balance sheet date for possible disclosure as a subsequent event through the date that these consolidated financial statements were issued. On April 30, 2018, the Company acquired a 65% interest in a leading provider of industrial injury prevention for $9.0 million.

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

3 Months Ended

Mar. 31, 2018

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Abstract]

The Company maintains its cash and cash equivalents at financial institutions. The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. The combined account balances at several institutions typically exceed Federal Deposit Insurance Corporation (“FDIC”) insurance coverage and, as a result, there is a concentration of credit risk related on deposits in excess of FDIC insurance coverage. Management believes that the risk is not significant.

Long-Lived Assets

Fixed assets are stated at cost. Depreciation is computed on the straight-line method over the estimated useful lives of the assets. Estimated useful lives for furniture and equipment range from three to eight years and for purchased software from three to seven years. Leasehold improvements are amortized over the shorter of the lease term or estimated useful lives of the assets, which is generally three to five years.

Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of

The Company reviews property and equipment and intangible assets with finite lives for impairment upon the occurrence of certain events or circumstances which indicate that the amounts may be impaired. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

Goodwill

Goodwill represents the excess of the amount paid and fair value of the non-controlling interests over the fair value of the acquired business assets, which include certain identifiable intangible assets. Historically, goodwill has been derived from acquisitions and, prior to 2009, from the purchase of some or all of a particular local management’s equity interest in an existing clinic. Effective January 1, 2009, if the purchase price of a non-controlling interest by the Company exceeds or is less than the book value at the time of purchase, any excess or shortfall is recognized as an adjustment to additional paid-in capital.

The fair value of goodwill and other identifiable intangible assets with indefinite lives are tested for impairment annually and upon the occurrence of certain events, and are written down to fair value if considered impaired. The Company evaluates goodwill for impairment on at least an annual basis (in its third quarter) by comparing the fair value of its reporting units to the carrying value of each reporting unit including related goodwill. The Company evaluates indefinite lived tradenames using the relief from royalty method in conjunction with its annual goodwill impairment test. The Company operates a one segment business which is made up of various clinics within partnerships. The partnerships are components of regions and are aggregated to the operating segment level for the purpose of determining the Company’s reporting units when performing its annual goodwill impairment test. In the first quarter of 2018, there were six regions. In addition to the six regions, in 2017, the impairment test included a separate analysis for the industrial injury prevention business, a separate reporting unit.

An impairment loss generally would be recognized when the carrying amount of the net assets of a reporting unit, inclusive of goodwill and other identifiable intangible assets, exceeds the estimated fair value of the reporting unit. The estimated fair value of a reporting unit is determined using two factors: (i) earnings prior to taxes, depreciation and amortization for the reporting unit multiplied by a price/earnings ratio used in the industry and (ii) a discounted cash flow analysis. A weight is assigned to each factor and the sum of each weight times the factor is considered the estimated fair value. For 2017, the factors (i.e., price/earnings ratio, discount rate and residual capitalization rate) were updated to reflect current market conditions. The evaluation of goodwill in 2017, 2016 and 2015 did not result in any goodwill amounts that were deemed impaired.

The Company has not identified any triggering events occurring after the testing date that would impact the impairment testing results obtained. The Company will continue to monitor for any triggering events or other indicators of impairment.

Redeemable Non-Controlling Interests

The non-controlling interests that are reflected as redeemable non-controlling interests in the consolidated financial statements consist of those that the owners and the Company have certain redemption rights, whether currently exercisable or not, and which currently, or in the future, require that the Company purchase or the owner sell the non-controlling interest held by the owner, if certain conditions are met. The purchase price is derived at a predetermined formula based on a multiple of trailing twelve months earnings performance as defined in the respective limited partnership agreements. The redemption rights can be triggered by the owner or the Company at such time as both of the following events have occurred: 1) termination of the owner’s employment, regardless of the reason for such termination, and 2) the passage of specified number of years after the closing of the transaction, typically three to five years, as defined in the limited partnership agreement. The redemption rights are not automatic or mandatory (even upon death) and require either the owner or the Company to exercise its rights when the conditions triggering the redemption rights have been satisfied.

On the date the Company acquires a controlling interest in a partnership, and the limited partnership agreement for such partnership contains redemption rights not under the control of the Company, the fair value of the non-controlling interest is recorded in the consolidated balance sheet under the caption – Redeemable non-controlling interests. Then, in each reporting period thereafter until it is purchased by the Company, the redeemable non-controlling interest is adjusted to the greater of its then current redemption value or initial value, based on the predetermined formula defined in the respective limited partnership agreement. As a result, the value of the non-controlling interest is not adjusted below its initial value. The Company records any adjustment in the redemption value, net of tax, directly to retained earnings and are not reflected in the consolidated statements of income. Although the adjustments are not reflected in the consolidated statements of income, current accounting rules require that the Company reflects the adjustments, net of tax, in the earnings per share calculation. The amount of net income attributable to redeemable non-controlling interest owners is included in consolidated net income on the face of the consolidated statement of income. Management believes the redemption value (i.e. the carrying amount) and fair value are the same.

Non-Controlling Interests

The Company recognizes non-controlling interests, in which the Company has no obligation but the right to purchase the non-controlling interests, as equity in the consolidated financial statements separate from the parent entity’s equity. The amount of net income attributable to non-controlling interests is included in consolidated net income on the face of the statements of net income. Changes in a parent entity’s ownership interest in a subsidiary that do not result in deconsolidation are treated as equity transactions if the parent entity retains its controlling financial interest. The Company recognizes a gain or loss in net income when a subsidiary is deconsolidated. Such gain or loss is measured using the fair value of the non-controlling equity investment on the deconsolidation date.

When the purchase price of a non-controlling interest by the Company exceeds the book value at the time of purchase, any excess or shortfall is recognized as an adjustment to additional paid-in capital. Additionally, operating losses are allocated to non-controlling interests even when such allocation creates a deficit balance for the non-controlling interest partner.

Revenue Recognition

Revenues are recognized in the period in which services are rendered. See Footnote 3 for further discussion of revenue recognition.

Allowance for Doubtful Accounts

The Company determines allowances for doubtful accounts based on the specific agings and payor classifications at each clinic. The provision for doubtful accounts is included in operating costs in the statement of net income. Net accounts receivable, which are stated at the historical carrying amount net of contractual allowances, write-offs and allowance for doubtful accounts, includes only those amounts the Company estimates to be collectible.

Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

The Company recognizes the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount to be recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority.

The Tax Cuts and Jobs Act of 2017 (the “TCJA”) was passed by Congress on December 20, 2017 and signed into law by President Trump on December 22, 2017. The TCJA makes significant changes to U.S. corporate income tax laws including a decrease in the corporate income tax rate to 21% effective January 1, 2018.

The Company did not have any accrued interest or penalties associated with any unrecognized tax benefits nor was any interest expense recognized during the twelve months ended March 31, 2018. The Company will book any interest or penalties, if required, in interest and other expense, as appropriate.

Fair Value of Financial Instruments

The carrying amounts reported in the balance sheets for cash and cash equivalents, accounts receivable, accounts payable and notes payable approximate their fair values due to the short-term maturity of these financial instruments. The carrying amount under the Amended Credit Agreement approximates its fair value. The interest rate on the Amended Credit Agreement, which is tied to the Eurodollar Rate, is set at various short-term intervals, as detailed in the Amended Credit Agreement.

Segment Reporting

Operating segments are components of an enterprise for which separate financial information is available that is evaluated regularly by chief operating decision makers in deciding how to allocate resources and in assessing performance. The Company identifies operating segments based on management responsibility and believes it meets the criteria for aggregating its operating segments into a single reporting segment.

Use of Estimates

In preparing the Company’s consolidated financial statements, management makes certain estimates and assumptions, especially in relation to, but not limited to, purchase accounting, goodwill impairment, allowance for receivables, tax provision and contractual allowances, that affect the amounts reported in the consolidated financial statements and related disclosures. Actual results may differ from these estimates.

Self-Insurance Program

The Company utilizes a self-insurance plan for its employee group health insurance coverage administered by a third party. Predetermined loss limits have been arranged with the insurance company to minimize the Company’s maximum liability and cash outlay. Accrued expenses include the estimated incurred but unreported costs to settle unpaid claims and estimated future claims. Management believes that the current accrued amounts are sufficient to pay claims arising from self-insurance claims incurred through March 31, 2018.

Restricted Stock

Restricted stock issued to employees and directors is subject to continued employment or continued service on the board, respectively. Generally, restrictions on the stock granted to employees, other than officers, lapse in equal annual installments on the following four anniversaries of the date of grant. For those shares granted to directors, the restrictions will lapse in equal quarterly installments during the first year after the date of grant. For those granted to officers, the restriction will lapse in equal quarterly installments during the four years following the date of grant. Compensation expense for grants of restricted stock is recognized based on the fair value per share on the date of grant amortized over the vesting period. The restricted stock issued is included in basic and diluted shares for the earnings per share computation.

Recently Adopted Accounting Guidance

In May 2014, March 2016, April 2016, and December 2016, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, ASU 2016-08, Revenue from Contracts with Customers, Principal versus Agent Considerations, ASU 2016-10, Revenue from Contracts with Customers, Identifying Performance Obligations and Licensing, ASU 2016-12, Revenue from Contracts with Customers, Narrow Scope Improvements and Practical Expedients, and ASU 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customer (collectively “the standards”), respectively, which supersede most of the current revenue recognition requirements. The core principle of the new guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. New disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers are also required. The original standards were effective for fiscal years beginning after December 15, 2016; however, in July 2015, the FASB approved a one-year deferral of these standards, with a new effective date for fiscal years beginning after December 15, 2017. The standards require the selection of a retrospective or cumulative effect transition method.

The Company implemented the new standard beginning January 1, 2018 using a modified retrospective transition method. Adoption of the new standard did not result in material changes to the presentation of net revenues and bad debt expense in the consolidated statements of income, and the presentation of the amount of income from operations and net income will be unchanged upon adoption of the new standards. The principal change relates to how the new standard requires healthcare providers to estimate the amount of variable consideration to be included in the transaction price up to an amount which is probable that a significant reversal will not occur. The most common forms of variable consideration the Company experiences are amounts for services provided that are ultimately not realizable from a customer. Under the current standards, the Company’s estimate for unrealizable amounts is recorded as a reduction of revenue. Under the new standards, the Company’s estimate for unrealizable amounts will continue to be recognized as a reduction to revenue. The bad debt expense historically reported will not materially change.

Recently Issued Accounting Guidance

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment (Topic 350), which eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment change. ASU 2017-04 is effective prospectively for fiscal years, and the interim periods within those years, beginning after December 15, 2019. The Company does not expect adoption of this ASU to have a material impact.

In February 2016, the FASB issued amended accounting guidance (ASU 2016-02, Leases) which replaced most existing lease accounting guidance under U. S. generally accepted accounting principles. Among other changes, the amended guidance requires that a right-to-use asset, which is an asset that represents the lessee’s right to use, and a lease liability, which is a lessee’s obligation to make lease payments arising for a lease measured on a discounted basis, be recognized on the balance sheet by lessees for those leases with a term of greater than 12 months. The amended guidance is effective for reporting periods beginning after December 15, 2018; however, early adoption is permitted. Entities can use to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements or recognize the cumulative effect of applying the new standard as an adjustment to the opening balance of retained earnings.

Since the Company leases all but one of its clinic facilities, upon adoption, the Company will recognize significant assets and liabilities on the consolidated balance sheets as a result of the operating lease obligations of the Company. Operating lease expense will continue to be recognized as rent expense on a straight-line basis over the respective lease terms in the consolidated statements of income.

The Company will implement the new standard beginning January 1, 2019. The Company’s implementation efforts are focused on populating the data in a lease accounting software package and developing internal controls in order to account for its leases under the new standard.

Subsequent Event

The Company has evaluated events occurring after the balance sheet date for possible disclosure as a subsequent event through the date that these consolidated financial statements were issued. On April 30, 2018, the Company acquired a 65% interest in a leading provider of industrial injury prevention for $9.0 million.