Subsequent Events	6 Months Ended
Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 23, 2018, the Company closed follow-on public offerings of 4,836,336 shares of common stock at a public offering price of $23.50 per share, and $143,750 aggregate principal amount of its 1.75% Convertible Senior Notes due 2023 ("Notes"). The aggregate gross proceeds from the common stock offering was $113,654 and from the Notes offering was $143,750. The Company received $107,971 in proceeds from the common stock offering and $139,438 in proceeds from the Notes offering, in each case after deducting underwriting discounts but before deducting offering costs. The Notes are senior, unsecured obligations of Redfin, and bear interest at a fixed rate of 1.75% per year, payable semi-annually in arrears. The Notes mature on July 15, 2023, unless earlier repurchased, redeemed or converted. Prior to April 15, 2023, the Notes are convertible at the option of holders during certain periods, upon satisfaction of certain conditions. Thereafter, the Notes are convertible at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. Redfin may redeem for cash all or any portion of the notes, at its option, on or after July 20, 2021, upon satisfaction of certain conditions at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest. Redfin will settle conversions of the Notes by paying or delivering, as the case may be, cash, shares of its common stock, or a combination of cash and shares of its common stock, at its election. Holders of the Notes have the right to require Redfin to repurchase for cash all or a portion of their Notes at 100% of their principal amount, plus any accrued and unpaid interest, upon the occurrence of a fundamental change (as defined in the indenture relating to the Notes). Redfin is required to increase the conversion rate for holders who convert their notes in connection with certain fundamental changes occurring prior to the maturity date or following Redfin’s issuance of a notice of redemption. The initial conversion rate of the Notes is 32.7332 shares of common stock per $1,000 principal amount of Notes, equivalent to an initial conversion price of approximately $30.55 per share of common stock. The initial conversion price represents a premium of approximately 30% to the $23.50 per share public offering price for the common stock offering.

Subsequent Events

On July 23, 2018, the Company closed follow-on public offerings of 4,836,336 shares of common stock at a public offering price of $23.50 per share, and $143,750 aggregate principal amount of its 1.75% Convertible Senior Notes due 2023 ("Notes").

The aggregate gross proceeds from the common stock offering was $113,654 and from the Notes offering was $143,750. The Company received $107,971 in proceeds from the common stock offering and $139,438 in proceeds from the Notes offering, in each case after deducting underwriting discounts but before deducting offering costs.

The Notes are senior, unsecured obligations of Redfin, and bear interest at a fixed rate of 1.75% per year, payable semi-annually in arrears. The Notes mature on July 15, 2023, unless earlier repurchased, redeemed or converted. Prior to April 15, 2023, the Notes are convertible at the option of holders during certain periods, upon satisfaction of certain conditions. Thereafter, the Notes are convertible at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. Redfin may redeem for cash all or any portion of the notes, at its option, on or after July 20, 2021, upon satisfaction of certain conditions at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest. Redfin will settle conversions of the Notes by paying or delivering, as the case may be, cash, shares of its common stock, or a combination of cash and shares of its common stock, at its election.

Holders of the Notes have the right to require Redfin to repurchase for cash all or a portion of their Notes at 100% of their principal amount, plus any accrued and unpaid interest, upon the occurrence of a fundamental change (as defined in the indenture relating to the Notes). Redfin is required to increase the conversion rate for holders who convert their notes in connection with certain fundamental changes occurring prior to the maturity date or following Redfin’s issuance of a notice of redemption.

The initial conversion rate of the Notes is 32.7332 shares of common stock per $1,000 principal amount of Notes, equivalent to an initial conversion price of approximately $30.55 per share of common stock. The initial conversion price represents a premium of approximately 30% to the $23.50 per share public offering price for the common stock offering.