Class A Redeemable Convertible Preferred Stock	9 Months Ended
Class A Redeemable Convertible Preferred Stock	Sep. 30, 2019
Temporary Equity Disclosure [Abstract]
Class A Redeemable Convertible Preferred Stock	Class A Redeemable Convertible Preferred Stock On December 30, 2015, the Company issued 14,666,667 shares of its Series A Redeemable Convertible Preferred Stock ("Series A Preferred Stock") as part of the consideration for the acquisition of Clarient. The Series A Preferred Stock had a face value of $7.50 per share for a total liquidation value of $110 million. On December 22, 2016, the Company redeemed 8,066,667 shares of the Series A Preferred Stock for $55.0 million in cash. The redemption amount per share equaled $6.82 ($7.50 minus the liquidation discount of 9.09%). In December 2017, the Company issued 264,000 additional shares of preferred stock as a paid-in-kind dividend, resulting in a balance of 6,864,000 shares of Series A Preferred Stock outstanding at March 31, 2018. On June 25, 2018, the Company redeemed the remaining outstanding preferred stock for an aggregate redemption amount of $50.1 million, prior to consideration of any transaction related expenses. The shares were redeemed at $7.30 per share, representing the applicable 4.55% redemption discount on the original liquidation preference plus an additional $0.14 per share in respect of accrued and unpaid dividends for 2018. Following the redemption, no shares of preferred stock remain outstanding. The $9.1 million gain was calculated as the carrying value of the shares of preferred stock before the redemption of $37.8 million plus the amount of the beneficial conversion feature originally recorded with the redeemed shares of $21.3 million, as compared to the total consideration being paid, in this case the $50.1 million. Issue Discount The Company recorded the Series A Preferred Stock at a fair value of approximately $73.2 million, or $4.99 per share, on the date of issuance. The difference between the fair value of $73.2 million and the liquidation value of $110 million represents a discount of $36.8 million from the initial face value representing the impact the rights and features of the instrument had on the value to the Company. After the partial redemption, the Series A Preferred stock had a fair value of approximately $32.9 million, or $4.99 per share. The difference between the fair value of $32.9 million and the liquidation value of $49.5 million represented a discount of approximately $16.6 million. Beneficial Conversion Features (“BCF”) The fair value of the common stock into which the Series A Preferred Stock was convertible exceeded the allocated purchase price fair value of the Series A Preferred Stock at the date of issuance and after the partial redemption in December of 2016 by approximately $44.7 million and $20.1 million, respectively, resulting in a beneficial conversion feature. The Company recognized the beneficial conversion feature as non-cash, deemed dividends to the holder of Series A Preferred Stock over the first three years the Series A Preferred Stock was outstanding, as the date the stock first becomes convertible was three years from the issue date. In addition to the BCF recorded at the original issue date, the Company recorded additional BCF discounts for payment-in-kind shares accrued for the quarter ended March 31, 2018 as dividends. Classification Prior to redemption, the Company classified the Preferred Stock as temporary equity on the Consolidated Balance Sheets due to certain change in control events that could have occurred and would have been outside of the Company’s control, including deemed liquidation events described in the Series A Certificate of Designation.