Commitments And Contingencies	12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies Litigation From time to time the Company is named as a party to legal claims and proceedings in the ordinary course of business. The Company's management is not aware of any claims or proceedings that are expected to have a material adverse impact on the Company's consolidated financial condition, results of operations or cash flows. Insurance Programs Given the nature of the services provided, the Company and its subsidiaries are subject to professional and general liability claims and related lawsuits in the ordinary course of business. The Company maintains professional insurance with third-party insurers generally on a claims-made basis, subject to self-insured retentions, exclusions and other restrictions. A substantial portion of the professional liability loss risks are being provided by a third-party insurer which is fully reinsured by the Company's wholly-owned captive. In addition, the wholly-owned captive provides stop loss coverage for the Company’s self-insured employee health program. The assets, liabilities and results of operations of the wholly-owned captive are consolidated in the accompanying consolidated financial statements. The liabilities for self-insurance in the accompanying consolidated balance sheets include estimates of the ultimate costs related to both reported claims on an individual and aggregate basis and unreported claims. The Company also obtains professional liability insurance on a claims-made basis from third party insurers for its surgery centers and certain of its owned practices and employed physicians. The Company’s reserves for professional liability claims within the self-insured retention are based upon periodic actuarial calculations. These actuarial estimates consider historical claims frequency and severity, loss development patterns and other actuarial assumptions and are not discounted to present value. The Company also maintains insurance for director and officer liability, workers’ compensation liability and property damage. Certain policies are subject to deductibles. In addition to the insurance coverage provided, the Company indemnifies its officers and directors for actions taken on behalf of the Company and its subsidiaries. Redeemable Noncontrolling Interests Certain of the Company’s wholly-owned subsidiaries, as general partners in the LPs, are responsible for all debts incurred but unpaid by the LPs. As manager of the operations of the LPs, the Company has the ability to limit potential liabilities by curtailing operations or taking other operating actions. In the event of a change in current law that would prohibit the physicians’ current form of ownership in the partnerships, the Company would be obligated to purchase the physicians’ interests in a substantial majority of the Company’s partnerships. The purchase price to be paid in such event would be determined by a predefined formula, as specified in the partnership agreements. The Company believes the likelihood of a change in current law that would trigger such purchases was remote as of December 31, 2014. As a result, the noncontrolling interests that are subject to this redemption feature are not included as part of the Company’s equity and are classified as noncontrolling interests – redeemable on the Company’s consolidated balance sheets. Corporate Headquarters Operating Lease On December 27, 2012, the Company entered into a lease agreement to lease an approximately 110,000 square foot building in Nashville, Tennessee that will serve as its corporate headquarters. The Company took possession of the building in the fourth quarter of 2014.

Commitments and Contingencies

Litigation

From time to time the Company is named as a party to legal claims and proceedings in the ordinary course of business. The Company's management is not aware of any claims or proceedings that are expected to have a material adverse impact on the Company's consolidated financial condition, results of operations or cash flows.

Insurance Programs

Given the nature of the services provided, the Company and its subsidiaries are subject to professional and general liability claims and related lawsuits in the ordinary course of business. The Company maintains professional insurance with third-party insurers generally on a claims-made basis, subject to self-insured retentions, exclusions and other restrictions. A substantial portion of the professional liability loss risks are being provided by a third-party insurer which is fully reinsured by the Company's wholly-owned captive. In addition, the wholly-owned captive provides stop loss coverage for the Company’s self-insured employee health program. The assets, liabilities and results of operations of the wholly-owned captive are consolidated in the accompanying consolidated financial statements. The liabilities for self-insurance in the accompanying consolidated balance sheets include estimates of the ultimate costs related to both reported claims on an individual and aggregate basis and unreported claims. The Company also obtains professional liability insurance on a claims-made basis from third party insurers for its surgery centers and certain of its owned practices and employed physicians.

The Company’s reserves for professional liability claims within the self-insured retention are based upon periodic actuarial calculations. These actuarial estimates consider historical claims frequency and severity, loss development patterns and other actuarial assumptions and are not discounted to present value.

The Company also maintains insurance for director and officer liability, workers’ compensation liability and property damage. Certain policies are subject to deductibles. In addition to the insurance coverage provided, the Company indemnifies its officers and directors for actions taken on behalf of the Company and its subsidiaries.

Redeemable Noncontrolling Interests

Certain of the Company’s wholly-owned subsidiaries, as general partners in the LPs, are responsible for all debts incurred but unpaid by the LPs. As manager of the operations of the LPs, the Company has the ability to limit potential liabilities by curtailing operations or taking other operating actions. In the event of a change in current law that would prohibit the physicians’ current form of ownership in the partnerships, the Company would be obligated to purchase the physicians’ interests in a substantial majority of the Company’s partnerships. The purchase price to be paid in such event would be determined by a predefined formula, as specified in the partnership agreements. The Company believes the likelihood of a change in current law that would trigger such purchases was remote as of December 31, 2014. As a result, the noncontrolling interests that are subject to this redemption feature are not included as part of the Company’s equity and are classified as noncontrolling interests – redeemable on the Company’s consolidated balance sheets.

Corporate Headquarters Operating Lease

On December 27, 2012, the Company entered into a lease agreement to lease an approximately 110,000 square foot building in Nashville, Tennessee that will serve as its corporate headquarters. The Company took possession of the building in the fourth quarter of 2014.