Subsequent Events	9 Months Ended
Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Thyroid Cytopathology Partners On October 16, 2017, the Company amended and restated its service agreement with TCP. The agreement is effective through October 31, 2022, and thereafter automatically renews every year unless either party provides notice of intent not to renew at least 12 months prior to the end of the then-current term. In connection with amending and restating the TCP agreement, the Company’s arrangement with PRC was simultaneously assigned by PRC to TCP and immediately terminated, and the Company agreed to pay PRC a total of $1,750,000 over eight quarterly installments in exchange for TCP reducing the price per test it charges the Company during the term of the amended TCP agreement. Loan and Security Agreement On November 3, 2017, the Company entered into a loan and security agreement (the “Loan and Security Agreement”) with Silicon Valley Bank. In connection with the entry into the Loan and Security Agreement, the Company terminated the Credit Agreement with Visium, wherein all commitments were terminated, all liens were released and all outstanding principal and interest and fees accrued thereunder were repaid in the aggregate amount of $27.3 million. The Company expects to expense approximately $1.9 million in prepayment premium and debt issuance cost write-offs in the quarter ending December 31, 2017. The Loan and Security Agreement allows the Company to borrow up to $35.0 million, with a $25.0 million advance term loan (the “Term Loan Advance”) and a revolving line of credit of up to $10.0 million (the “Revolving Line of Credit”). The Term Loan Advance was advanced upon the closing of the Loan and Security Agreement. Borrowings under the Loan and Security Agreement mature in October 2022. The Term Loan Advance bears interest at a variable rate equal to (i) the thirty-day U.S. London Interbank Offer Rate (“LIBOR”) plus (ii) 4.20%, with a minimum rate of 5.43% per annum. Principal amounts outstanding under the Revolving Line of Credit bear interest at a variable rate equal to (i) LIBOR plus (ii) 3.50%, with a minimum rate of 4.70% per annum. The Company may prepay the outstanding principal amount under the Term Loan Advance plus accrued and unpaid interest and, if the Term Loan Advance is repaid in full, a prepayment premium. In addition, a final payment on the Term Loan Advance in the amount of $1.2 million is due upon the earlier of the maturity date of the Term Loan Advance or its payment in full. The Loan and Security Agreement contains customary representations, warranties, and events of default, as well as affirmative and negative covenants. The Company’s obligations under the Loan and Security Agreement are secured by substantially all of its assets (excluding intellectual property), subject to certain customary exceptions. The net proceeds from the Term Loan Advance were used towards the full repayment of the outstanding balance under the Credit Agreement.

Subsequent Events

Thyroid Cytopathology Partners

On October 16, 2017, the Company amended and restated its service agreement with TCP. The agreement is effective through October 31, 2022, and thereafter automatically renews every year unless either party provides notice of intent not to renew at least 12 months prior to the end of the then-current term. In connection with amending and restating the TCP agreement, the Company’s arrangement with PRC was simultaneously assigned by PRC to TCP and immediately terminated, and the Company agreed to pay PRC a total of $1,750,000 over eight quarterly installments in exchange for TCP reducing the price per test it charges the Company during the term of the amended TCP agreement.

Loan and Security Agreement

On November 3, 2017, the Company entered into a loan and security agreement (the “Loan and Security Agreement”) with Silicon Valley Bank. In connection with the entry into the Loan and Security Agreement, the Company terminated the Credit Agreement with Visium, wherein all commitments were terminated, all liens were released and all outstanding principal and interest and fees accrued thereunder were repaid in the aggregate amount of $27.3 million. The Company expects to expense approximately $1.9 million in prepayment premium and debt issuance cost write-offs in the quarter ending December 31, 2017.

The Loan and Security Agreement allows the Company to borrow up to $35.0 million, with a $25.0 million advance term loan (the “Term Loan Advance”) and a revolving line of credit of up to $10.0 million (the “Revolving Line of Credit”). The Term Loan Advance was advanced upon the closing of the Loan and Security Agreement. Borrowings under the Loan and Security Agreement mature in October 2022. The Term Loan Advance bears interest at a variable rate equal to (i) the thirty-day U.S. London Interbank Offer Rate (“LIBOR”) plus (ii) 4.20%, with a minimum rate of 5.43% per annum. Principal amounts outstanding under the Revolving Line of Credit bear interest at a variable rate equal to (i) LIBOR plus (ii) 3.50%, with a minimum rate of 4.70% per annum.

The Company may prepay the outstanding principal amount under the Term Loan Advance plus accrued and unpaid interest and, if the Term Loan Advance is repaid in full, a prepayment premium. In addition, a final payment on the Term Loan Advance in the amount of $1.2 million is due upon the earlier of the maturity date of the Term Loan Advance or its payment in full. The Loan and Security Agreement contains customary representations, warranties, and events of default, as well as affirmative and negative covenants. The Company’s obligations under the Loan and Security Agreement are secured by substantially all of its assets (excluding intellectual property), subject to certain customary exceptions.

The net proceeds from the Term Loan Advance were used towards the full repayment of the outstanding balance under the Credit Agreement.