Term Loan Agreements - Additional Information (Detail)					1 Months Ended	3 Months Ended				6 Months Ended
	Apr. 22, 2020 USD ($)	Feb. 13, 2019 USD ($)	Jun. 26, 2018 USD ($) $ / shares shares	Mar. 28, 2018 USD ($) Tranche $ / shares shares	Jun. 30, 2018 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Apr. 08, 2020 USD ($)	Apr. 30, 2019 USD ($)
Term Loan Agreement [Line Items]
Proceeds from issuance of long-term debt											$ 50,000,000
Loss on extinguishment of debt						$ 0		$ 0		$ 0	(3,810,000)
Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
Amortization of debt discount (premium)						177,000		$ 130,000		$ 348,000	$ 185,000
Senior Secured Term Loan [Member] | Warrants [Member]
Term Loan Agreement [Line Items]
Exercise price of issued warrants | $ / shares			$ 1.93	$ 1.10
Initial Advance [Member] | Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
Proceeds from issuance of term loan, net of allocation to the debt warrant				$ 14,600,000
Initial Advance [Member] | Senior Secured Term Loan [Member] | Warrants [Member]
Term Loan Agreement [Line Items]
Warrants issued in connection with loan | shares				409,091
Exercise price of issued warrants | $ / shares				$ 1.10
Fair value of warrants issued				$ 284,000
Additional Advance [Member] | Senior Secured Term Loan [Member] | Warrants [Member]
Term Loan Agreement [Line Items]
Warrants issued in connection with loan | shares			77,721
Exercise price of issued warrants | $ / shares			$ 1.93
Warrants, contingent issuance fair value				$ 69,000
Revaluation of additional advance warrants shares reclassified to equity					$ 87,000
Additional Advance [Member] | SWK Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
Upfront loan origination fee percentage			1.50%
Exit fee percentage payable upon repayment of the total secured term loan			6.00%
Total debt discount			$ 652,000
Loan origination fee, exit fee and other loan transaction costs			299,000
Amortization of deferred debt issue cost through the date of the Additional Advance			97,000
Debt issuance costs remaining balance reclassified to debt discount					$ 202,000
CRG Servicing LLC [Member]
Term Loan Agreement [Line Items]
Restriction of the right to capitalize a portion of quarterly interest in the event of a loan default										So long as no default has occurred and is continuing, the Company may elect on each applicable interest payment date to pay 2.5% of the 12.5% per annum interest as Paid In-Kind (“PIK”), whereby such PIK amount would be added to the aggregate principal amount and accrue interest at 12.5% per annum.
Upfront loan origination fee percentage		1.50%
Minimum liquidity amount		$ 5,000,000
Total debt discount		4,300,000
CRG Servicing LLC [Member] | Period One [Member]
Term Loan Agreement [Line Items]
Annual minimum product revenue		15,000,000
Annual minimum product revenue period										on January 1, 2019 and ending on December 31, 2019
CRG Servicing LLC [Member] | Period Two [Member]
Term Loan Agreement [Line Items]
Annual minimum product revenue		45,000,000
Annual minimum product revenue period										January 1, 2020 and ending on December 31, 2020
CRG Servicing LLC [Member] | Period Three [Member]
Term Loan Agreement [Line Items]
Annual minimum product revenue		80,000,000
Annual minimum product revenue period										January 1, 2021 and ending on December 31, 2021
CRG Servicing LLC [Member] | Period Four [Member]
Term Loan Agreement [Line Items]
Annual minimum product revenue		$ 90,000,000
Annual minimum product revenue period										January 1, 2022 and ending on December 31, 2022
CRG Servicing LLC [Member] | Loan Prepayment after December 31, 2019 and Prior to December 31, 2020 [Member]
Term Loan Agreement [Line Items]
Principal prepayment premium percentage		5.00%
CRG Servicing LLC [Member] | Loan prepayment after December 31, 2020 and prior to December 31, 2021 [Member]
Term Loan Agreement [Line Items]
Principal prepayment premium percentage		3.00%
CRG Servicing LLC [Member] | Loan prepayment after December 31 2021 [Member]
Term Loan Agreement [Line Items]
Principal prepayment premium percentage		0.00%
CRG Servicing LLC [Member] | Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
Annual interest rate on term loan balance		12.50%
Proceeds from issuance of long-term debt							$ 0
Agreement date		Feb. 13, 2019
Senior secured term loan borrowing facility		$ 60,000,000
Term loan agreement, initial advance		$ 35,000,000
Maturity date		Dec. 31, 2023
Paid in Kind Interest Added to Principal						647,000				$ 647,000
Exit fee percentage payable upon repayment of the total secured term loan		6.00%
Upfront loan original fee payment, initial advance		$ 750,000
Reimbursement of lender's legal fees and other transaction costs		350,000
Exit fee accrued		3,000,000.0
Line of credit facility, legal and other transaction costs		$ 591,000
CRG Servicing LLC [Member] | Second Advance [Member]
Term Loan Agreement [Line Items]
Term loan agreement, additional loan advance													$ 15,000,000
CRG Servicing LLC [Member] | Second Advance [Member] | Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
One-time upfront financing fee percentage applied to borrowing amounts under the line of credit facility		1.50%
Upfront loan original fee payment, initial advance		$ 225,000
CRG Servicing LLC [Member] | Initial Advance [Member] | Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
One-time upfront financing fee percentage applied to borrowing amounts under the line of credit facility		1.50%
Upfront loan original fee payment, initial advance		$ 525,000
SWK Funding LLC [Member] | Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
Agreement date				Mar. 28, 2018
Senior secured term loan borrowing facility				$ 20,000,000
Term loan agreement, initial advance				$ 15,000,000
Maturity date				Mar. 27, 2023
Exit fee percentage payable upon repayment of the total secured term loan				6.00%
Amortization of debt discount (premium)									$ 84,000
Senior secured term loan, additional advance that followed satisfaction of applicable conditions			$ 5,000,000
Loss on extinguishment of debt									(3,800,000)
Write-off of remaining unamortized debt discount included as a component of the loss on extinguishment of debt									$ 2,300,000
SWK Funding LLC [Member] | Senior Secured Term Loan [Member] | Loan Refinancing [Member]
Term Loan Agreement [Line Items]
Prepayment penalty for voluntary repayment of the secured term loan		1,200,000
Payment of contractual 6% exit fee upon repayment of secured term loan		1,200,000
Payment of accrued and unpaid interest through the date of the secured term loan refinancing		664,000
Payment of additional make-whole interest from the loan refinancing date through the first anniversary of the secured term loan (Mar 28, 2019)		306,000
SWK Funding LLC [Member] | Senior Secured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Term Loan Agreement [Line Items]
Interest rate										three-month LIBOR rate (subject to a 1.5% floor) plus 10.50%.
LIBOR rate floor				1.50%
Interest rate percentage above LIBOR rate				10.50%
Repayment of senior secured term loan		$ 20,000,000
First Tranche Advance [Member] | SWK Senior Secured Term Loan [Member]
Term Loan Agreement [Line Items]
Upfront loan origination fee percentage				1.50%
Total debt discount				$ 2,100,000
Cost allocated tranches, number | Tranche				2
Loan origination fee, exit fee and other loan transaction costs				$ 1,800,000
Aggregate fair value of warrants				$ 353,000
Paycheck Protection Program Loan [Member] | Silicon Valley Bank [Member] | CARES Act [Member]
Term Loan Agreement [Line Items]
Loan amount												$ 2,000,000.0
Loan proceeds date	Apr. 22, 2020
Annual interest rate on term loan balance	1.00%
Debt instrument term	2 years
Debt instrument, maturity date	Apr. 21, 2022
Debt Instrument, Description										The Paycheck Protection Program Flexibility Act of 2020 (the “PPP Flexibility Act”), enacted on June 5, 2020, amended the Paycheck Protection Program, among others, as follows: (i) extended the covered period from 8 weeks to the earlier of 24 weeks from the date the PPP Loan is originated and December 31, 2020, during which PPP funds needed to be expended in order to be forgiven. A borrower may submit a loan forgiveness application any time on or before the maturity date of the loan – including before the end of the covered period – if the borrower has used all of the loan proceeds for which the borrower is requesting forgiveness. (ii) at least 60% of PPP funds must be spent on payroll costs, with the remaining 40% available to spend on other eligible expenses. (iii) payments are deferred until the date on which the amount of forgiveness determined is remitted to the lender. If a borrower fails to seek forgiveness within 10 months after the last day of its covered period, then payments will begin on the date that is 10 months after the last day of the covered period. In addition, the PPP Flexibility Act modified the CARES Act by increasing the maturity date for loans made after the effective date from two years to a minimum maturity of five years from the date on which the borrower applies for loan forgiveness. Existing PPP loans made before the new legislation retain their original two-year term, but may be renegotiated between a lender and a borrower to match the 5-year term permitted under the PPP Flexibility Act.
Proceeds from issuance of long-term debt	$ 2,000,000.0									$ 2,041,000
Accrued interest expense						$ 4,000