Disposition of the Hospital Business - Unaudited Pro Forma Condensed Combined Balance Sheets (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 83,109		$ 83,109		$ 9,774
Inventories	0		0		3,570
Prepaid expenses and other current assets	47,054		47,054		4,264
Goodwill	16,836		16,836		18,491
Intangible assets, net	0		0		813
Other non-current assets	22,264		22,264		39,274
Total assets	327,635		327,635		151,436
Current liabilities:
Current portion of long-term contingent consideration payable	0	$ 0	0		5,554
Accrued expenses	16,398		16,398		19,810
Long-term contingent consideration payable, less current portion	0	1,914	0		11,773
Total liabilities	156,435		156,435		180,635
Stockholders' Equity Attributable to Parent [Abstract]
Accumulated deficit	(372,909)		(372,909)		(391,215)
Total shareholders’ (deficit) equity	171,200	182,125	171,200	$ (26,963)	(29,199)	$ 32,067	$ (17,777)	$ (9,582)	$ 2,780
Total liabilities and shareholders’ equity (deficit)	327,635		327,635		151,436
Proceeds from the disposition of the hospital products			17,250	0
Increase (decrease) in other long-term assets					1,228
Net gain on the sale of the Hospital Products			0	$ (1,750)
Disposal Group, Disposed of by Sale, Not Discontinued Operations | The Business
Current assets:
Goodwill	1,655		$ 1,655
Stockholders' Equity Attributable to Parent [Abstract]
Initial cash consideration		14,500
Escrow deposit		$ 1,565
Payment installment term (in months)		10 months	10 months
Proceeds from the disposition of the hospital products	$ 2,750
Additional consideration paid in monthly installments		$ 27,500
Goodwill		1,654
Increase (decrease) in deferred income taxes					8,474
Net gain on the sale of the Hospital Products		$ 45,760	$ 45,760		38,723
Pro Forma
Current assets:
Cash and cash equivalents					22,709
Inventories					0
Prepaid expenses and other current assets					31,764
Goodwill					16,837
Intangible assets, net					0
Other non-current assets					29,572
Total assets					176,132
Current liabilities:
Current portion of long-term contingent consideration payable					500
Accrued expenses					22,610
Long-term contingent consideration payable, less current portion					0
Total liabilities					166,608
Stockholders' Equity Attributable to Parent [Abstract]
Accumulated deficit					(352,492)
Total shareholders’ (deficit) equity					9,524
Total liabilities and shareholders’ equity (deficit)					176,132
As Reported
Current assets:
Cash and cash equivalents					9,774
Inventories					3,570
Prepaid expenses and other current assets					4,264
Goodwill					18,491
Intangible assets, net					813
Other non-current assets					39,274
Total assets					151,436
Current liabilities:
Current portion of long-term contingent consideration payable					5,554
Accrued expenses					19,810
Long-term contingent consideration payable, less current portion					11,773
Total liabilities					180,635
Stockholders' Equity Attributable to Parent [Abstract]
Accumulated deficit					(391,215)
Total shareholders’ (deficit) equity					(29,199)
Total liabilities and shareholders’ equity (deficit)					151,436
Pro Forma Adjustments | Pro Forma
Current assets:
Cash and cash equivalents					12,935
Inventories					(3,570)
Prepaid expenses and other current assets					27,500
Goodwill					(1,654)
Intangible assets, net					(813)
Other non-current assets					(9,702)
Total assets					24,696
Current liabilities:
Current portion of long-term contingent consideration payable					(5,054)
Accrued expenses					2,800
Long-term contingent consideration payable, less current portion					(11,773)
Total liabilities					(14,027)
Stockholders' Equity Attributable to Parent [Abstract]
Accumulated deficit					38,723
Total shareholders’ (deficit) equity					38,723
Total liabilities and shareholders’ equity (deficit)					$ 24,696