SUBSEQUENT EVENTS (Notes)	3 Months Ended
Mar. 31, 2013
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Stock Offering Pursuant to the shelf registration statement on Form S-3 declared effective on April 4, 2013 (see Note 15), the Company filed a prospectus supplement on April 22, 2013, in conjunction with an Underwriting Agreement relating to a public offering of 12,500,000 shares of the Company's common stock, including 3,125,000 shares of the Company's common stock offered by certain selling stockholders, at a price to the public of $12.00 per share (the "Offering Price") less underwriting discounts and commissions and other offering expenses payable by the Company and such selling stockholders. Under the terms of the Underwriting Agreement, the underwriters fully exercised their option to purchase an additional 1,875,000 shares of common stock at the Offering Price less underwriting discounts and commissions and other offering expenses payable by the Company and such selling stockholders. On April 24, 2013, the Company completed the offering and received $118.6 million in net proceeds from the offering. The Company did not receive any proceeds from the sale of shares by the selling stockholders. The Company intends to use the net proceeds from the offering for general corporate purposes, which may include, among other things, financing growth, both organically and through acquisitions, investments, capital expenditures, repurchases of outstanding debt or equity securities, debt servicing requirements or redemption of our short-term or long-term borrowings, or for other working capital requirements. Refinancing of Existing Indebtedness On April 16, 2013, the Company announced its intention to partially refinance its existing indebtedness with the proceeds of a new senior secured credit facility, including a revolving credit facility and a term loan, in an approximate aggregate principal amount of $325 million. The Company entered into a best efforts commitment with respect to such credit facility to be arranged and syndicated by SunTrust Robinson Humphrey, Inc., Jefferies Finance LLC and Morgan Stanley Senior Credit Funding, Inc. The Company expects to use the proceeds of such credit facility to refinance its existing asset-based revolving credit facility, to redeem its outstanding 10.25% senior unsecured notes, and to support the working capital and general corporate needs of the Company. Disposal of Investment in Variable Interest Entity On April 19, 2013, the Company, along with all other minority investors, closed on the sale of its affiliate equity investment in a variable interest entity (see Note 1). At closing the Company received a cash payment of $8.5 million, with an additional $1.1 million held in escrow pending any working capital adjustments that may be necessary. Additionally, the Company will receive up to an additional $3.0 million in services or cash during the two years following close. The sale of this equity interest will not have a material effect on the financial statements. Employee Stock Purchase Plan On April 2, 2013, the Company filed a Registration Statement on Form S-8 to register 750,000 shares of Common Stock, par value $0.0001 per share, for issuance under the BioScrip, Inc. Employee Stock Purchase Plan (the “ESPP”). The ESPP was approved at the Company's 2013 Annual Meeting of Stockholders.

Stock Offering

Pursuant to the shelf registration statement on Form S-3 declared effective on April 4, 2013 (see Note 15), the Company filed a prospectus supplement on April 22, 2013, in conjunction with an Underwriting Agreement relating to a public offering of 12,500,000 shares of the Company's common stock, including 3,125,000 shares of the Company's common stock offered by certain selling stockholders, at a price to the public of $12.00 per share (the "Offering Price") less underwriting discounts and commissions and other offering expenses payable by the Company and such selling stockholders. Under the terms of the Underwriting Agreement, the underwriters fully exercised their option to purchase an additional 1,875,000 shares of common stock at the Offering Price less underwriting discounts and commissions and other offering expenses payable by the Company and such selling stockholders. On April 24, 2013, the Company completed the offering and received $118.6 million in net proceeds from the offering. The Company did not receive any proceeds from the sale of shares by the selling stockholders. The Company intends to use the net proceeds from the offering for general corporate purposes, which may include, among other things, financing growth, both organically and through acquisitions, investments, capital expenditures, repurchases of outstanding debt or equity securities, debt servicing requirements or redemption of our short-term or long-term borrowings, or for other working capital requirements.

Refinancing of Existing Indebtedness

On April 16, 2013, the Company announced its intention to partially refinance its existing indebtedness with the proceeds of a new senior secured credit facility, including a revolving credit facility and a term loan, in an approximate aggregate principal amount of $325 million. The Company entered into a best efforts commitment with respect to such credit facility to be arranged and syndicated by SunTrust Robinson Humphrey, Inc., Jefferies Finance LLC and Morgan Stanley Senior Credit Funding, Inc. The Company expects to use the proceeds of such credit facility to refinance its existing asset-based revolving credit facility, to redeem its outstanding 10.25% senior unsecured notes, and to support the working capital and general corporate needs of the Company.

Disposal of Investment in Variable Interest Entity

On April 19, 2013, the Company, along with all other minority investors, closed on the sale of its affiliate equity investment in a variable interest entity (see Note 1). At closing the Company received a cash payment of $8.5 million, with an additional $1.1 million held in escrow pending any working capital adjustments that may be necessary. Additionally, the Company will receive up to an additional $3.0 million in services or cash during the two years following close. The sale of this equity interest will not have a material effect on the financial statements.

Employee Stock Purchase Plan

On April 2, 2013, the Company filed a Registration Statement on Form S-8 to register 750,000 shares of Common Stock, par value $0.0001 per share, for issuance under the BioScrip, Inc. Employee Stock Purchase Plan (the “ESPP”). The ESPP was approved at the Company's 2013 Annual Meeting of Stockholders.