Credit Facility and Convertible Debentures	9 Months Ended
Sep. 30, 2019
Debt Disclosure [Abstract]
Credit Facility and Convertible Debentures	Credit Facility and Convertible Debentures Credit Facility During July 2019, the Company made a $49.5 million payment under its Credit Facility (as defined below) to its Lender (as defined below) consisting of $44.5 million of principal, $4.1 million of make-whole interest and $0.9 million of accrued interest, which satisfied all obligations under the Credit Facility. The Company was in compliance with all applicable covenants at June 30, 2019 and at the time of repayment. The Company's credit facility was with HPS Investment Partners, LLC (“Lender”), which was amended in May 2018 ("Credit Facility"). The Credit Facility had a scheduled maturity of May 11, 2020 and interest at a rate of either: (A) LIBOR plus 8.5% (subject to a LIBOR floor of 1%), payable on the last day of the one, two or three month interest period applicable to the LIBOR rate advance, or (B) 7.5% plus the greater of: 2%; the Federal Funds Rate plus 0.5%; LIBOR plus 1%; or the U.S. Prime Rate, payable monthly in arrears. The Credit Facility was secured by all of the Company's assets in accordance with the terms of the Credit Facility. The terms of the Credit Facility included a requirement that if the aggregate amount of the Company’s qualified cash at any quarter end date exceeded $50.0 million, the Company would be required to prepay outstanding principal amounts under the Credit Facility, plus any applicable interest and prepayment fees, in an amount equal to such excess. Based on this requirement, the Company made a principal payment of $24.0 million and a make-whole interest payment of $2.9 million on April 15, 2019 based on the Company's qualified cash at March 31, 2019. Additionally, the Company repaid the remaining principal of $44.5 million and make-whole interest of $4.1 million in July 2019. The Company was subject to certain debt covenants under the Credit Facility which required the Company to (i) maintain a liquidity threshold of at least $20 million of unrestricted cash; (ii) maintain a minimum aggregate appraised value of the Company’s ownership interests in its partner companies, plus unrestricted cash in excess of the liquidity threshold, of at least $350 million, less the aggregate amount of all prepayments; (iii) limit deployments to only existing partner companies and such deployments may not exceed, when combined with deployments after January 1, 2018, $40.0 million in the aggregate through the maturity date; and (iv) limit certain expenses (which shall exclude severance payments, interest expense, depreciation and stock-based compensation) incurred or paid to no more than $11.5 million in any twelve-month period after the date of the amendment (or such shorter period as has elapsed since the date of the amendment). Additionally, the Company was restricted from repurchasing shares of its outstanding common stock and/or issuing dividends until such time as the Credit Facility was repaid in full. The Company was in compliance with all applicable covenants. The Credit Facility required prepayments of outstanding principal and interest amounts when the Company’s qualified cash at any quarter end date exceeded $50.0 million. This provision in the Credit Facility was an embedded derivative that was accounted for separately from the Credit Facility. A liability of $0.5 million was recorded on the amendment date for the fair value of potential future prepayments based upon management's probability weighted cash forecast. This amount was also included in debt issuance costs and had been amortized over the remaining term of the Credit Facility. The liability was adjusted to fair value at each balance sheet date based upon management's updated probability weighted cash forecast. During the three and nine months ended September 30, 2019, the Company recorded a decrease in the liability of $4.1 million and $5.1 million, respectively, which is included in Other income (loss) on the Consolidated Statements of Operations. The Company recorded interest expense under the credit facility of $5.8 million and $3.3 million for the three months ended September 30, 2019 and 2018, respectively, and $14.0 million and $8.0 million for the nine months ended September 30, 2019 and 2018, respectively. The effective interest rate on the Credit Facility was 15.1%. The Company made interest payments under the Credit Facility of $5.0 million and $2.4 million for the three months ended September 30, 2019 and 2018, respectively, and $11.5 million and $4.9 million for the nine months ended September 30, 2019 and 2018, respectively.

Credit Facility and Convertible Debentures

Credit Facility

During July 2019, the Company made a $49.5 million payment under its Credit Facility (as defined below) to its Lender (as defined below) consisting of $44.5 million of principal, $4.1 million of make-whole interest and $0.9 million of accrued interest, which satisfied all obligations under the Credit Facility. The Company was in compliance with all applicable covenants at June 30, 2019 and at the time of repayment.

The Company's credit facility was with HPS Investment Partners, LLC (“Lender”), which was amended in May 2018 ("Credit Facility"). The Credit Facility had a scheduled maturity of May 11, 2020 and interest at a rate of either: (A) LIBOR plus 8.5% (subject to a LIBOR floor of 1%), payable on the last day of the one, two or three month interest period applicable to the LIBOR rate advance, or (B) 7.5% plus the greater of: 2%; the Federal Funds Rate plus 0.5%; LIBOR plus 1%; or the U.S. Prime Rate, payable monthly in arrears. The Credit Facility was secured by all of the Company's assets in accordance with the terms of the Credit Facility.

The terms of the Credit Facility included a requirement that if the aggregate amount of the Company’s qualified cash at any quarter end date exceeded $50.0 million, the Company would be required to prepay outstanding principal amounts under the Credit Facility, plus any applicable interest and prepayment fees, in an amount equal to such excess. Based on this requirement, the Company made a principal payment of $24.0 million and a make-whole interest payment of $2.9 million on April 15, 2019 based on the Company's qualified cash at March 31, 2019. Additionally, the Company repaid the remaining principal of $44.5 million and make-whole interest of $4.1 million in July 2019.

The Company was subject to certain debt covenants under the Credit Facility which required the Company to (i) maintain a liquidity threshold of at least $20 million of unrestricted cash; (ii) maintain a minimum aggregate appraised value of the Company’s ownership interests in its partner companies, plus unrestricted cash in excess of the liquidity threshold, of at least $350 million, less the aggregate amount of all prepayments; (iii) limit deployments to only existing partner companies and such deployments may not exceed, when combined with deployments after January 1, 2018, $40.0 million in the aggregate through the maturity date; and (iv) limit certain expenses (which shall exclude severance payments, interest expense, depreciation and stock-based compensation) incurred or paid to no more than $11.5 million in any twelve-month period after the date of the amendment (or such shorter period as has elapsed since the date of the amendment). Additionally, the Company was restricted from repurchasing shares of its outstanding common stock and/or issuing dividends until such time as the Credit Facility was repaid in full. The Company was in compliance with all applicable covenants.

The Credit Facility required prepayments of outstanding principal and interest amounts when the Company’s qualified cash at any quarter end date exceeded $50.0 million. This provision in the Credit Facility was an embedded derivative that was accounted for separately from the Credit Facility. A liability of $0.5 million was recorded on the amendment date for the fair value of potential future prepayments based upon management's probability weighted cash forecast. This amount was also included in debt issuance costs and had been amortized over the remaining term of the Credit Facility. The liability was adjusted to fair value at each balance sheet date based upon management's updated probability weighted cash forecast. During the three and nine months ended September 30, 2019, the Company recorded a decrease in the liability of $4.1 million and $5.1 million, respectively, which is included in Other income (loss) on the Consolidated Statements of Operations.

The Company recorded interest expense under the credit facility of $5.8 million and $3.3 million for the three months ended September 30, 2019 and 2018, respectively, and $14.0 million and $8.0 million for the nine months ended September 30, 2019 and 2018, respectively. The effective interest rate on the Credit Facility was 15.1%. The Company made interest payments under the Credit Facility of $5.0 million and $2.4 million for the three months ended September 30, 2019 and 2018, respectively, and $11.5 million and $4.9 million for the nine months ended September 30, 2019 and 2018, respectively.