Disposition of the Hospital Business - Unaudited Pro Forma Condensed Combined Balance Sheets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 71,722	$ 71,722	$ 9,774
Inventories	0	0	3,570
Prepaid expenses and other current assets	38,726	38,726	4,264
Goodwill	16,836	16,836	18,491
Intangible assets, net	0	0	813
Other non-current assets	24,939	24,939	39,274
Total assets	311,637	311,637	151,436
Current liabilities:
Current portion of long-term contingent consideration payable	0	0	5,554
Accrued expenses	6,501	6,501	19,810
Long-term contingent consideration payable, less current portion	0	0	11,773
Total liabilities	149,371	149,371	180,635
Stockholders' Equity Attributable to Parent [Abstract]
Accumulated deficit	(384,187)	(384,187)	(391,215)
Total shareholders’ (deficit) equity	162,266	162,266	(29,199)	$ 2,780		$ 85,580
Total liabilities and shareholders’ equity (deficit)	311,637	311,637	151,436
Proceeds from the disposition of the Hospital Products		25,500	0	0
Increase (decrease) in other long-term assets			1,228
Increase (decrease) in deferred income taxes		7,431	6,334	19,152
Disposition of the pediatrics assets				$ (20,337)
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
Proceeds from the disposition of the Hospital Products	2,750	$ 11,000
Additional consideration paid in monthly installments					27,500
Goodwill	$ 1,654	1,654			$ 1,654
Increase (decrease) in deferred income taxes			8,474
Disposition of the pediatrics assets		$ 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