Unaudited Quarterly Consolidated Financial Information - Income Statement (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended											6 Months Ended			9 Months Ended			12 Months Ended
	May 28, 2023	Feb. 26, 2023	Nov. 27, 2022	Aug. 28, 2022	May 29, 2022	Feb. 27, 2022	Nov. 28, 2021	Aug. 29, 2021	Feb. 28, 2021	Nov. 29, 2020	Aug. 30, 2020	Nov. 27, 2022	Nov. 28, 2021	Nov. 29, 2020	Feb. 26, 2023	Feb. 27, 2022	Feb. 28, 2021	May 28, 2023	May 29, 2022	May 30, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales	$ 31,145	$ 26,536	$ 21,864	$ 23,724	$ 28,107	$ 35,232	$ 25,601	$ 22,330	$ 27,807	$ 23,792	$ 22,675	$ 45,587						$ 103,269	$ 111,270	$ 100,874
Cost of product sales		17,988	16,185	17,745		23,593	14,143	16,785	16,877	13,018	17,381	33,929						75,284	72,204	61,937
Gross profit	7,779	8,548	5,679	5,979	10,424	11,639	11,458	5,545	10,930	10,774	5,294	11,658						27,985	39,066	38,937
Operating costs and expenses:
Research and development		2,234	2,177	2,211		2,254	1,680	1,689	1,637	1,591	1,739	4,388						8,736	7,839	6,684
Selling, general and administrative		10,279	8,291	8,103		13,749	5,461	6,951	7,149	6,710	7,490	16,395						38,969	34,659	27,721
Legal settlement charge										0
Impairment of goodwill and long-lived and indefinite-lived assets			0									0							0
Restructuring costs		2,566	563	1,047		5,274	627	1,128	2,071	1,099	6,667	1,610						4,184	8,359	13,355
Total operating costs and expenses		15,079	11,031	9,253		21,277	7,768	9,768	10,857	9,400	15,896	20,285						49,781	50,857	47,760
Operating (loss) income		(6,531)	(5,352)	(3,274)		(9,638)	3,690	(4,223)	73	1,374	(10,602)	(8,627)						(21,796)	(11,791)	(8,823)
Dividend income										0	0
Interest income		22	16	15		20	19	27	13	10	8	31						68	81	48
Interest expense		(4,855)	(3,624)	(3,246)		(3,676)	(2,767)	(6,130)	(2,562)	(1,596)	(1,665)	(6,870)						(17,649)	(15,551)	(8,933)
Transition services income		78	24	44		5,473			(1,110)			68						349	5,814	0
Other income (expense), net		26	(261)	(242)		290	330	46	305	(9,706)	(1,519)	(502)						(1,159)	760	(10,969)
Net loss from continuing operations before taxes		(11,260)	(9,197)	(6,703)		(7,531)	1,272	(10,280)	(3,281)	(9,918)	(13,778)	(15,900)						(63,928)	(20,687)	(29,787)
Income tax provision (benefit)		(70)	(4)	(4)		(3,389)	6,275	1,807	1,530	1,528	3,788	(8)						(308)	5,211	6,350
Net loss from continuing operations	(36,998)	(11,330)	(9,201)	(6,707)	(3,630)	(10,920)	7,547	(8,473)	(1,751)	(8,390)	(9,990)	(15,908)						(64,236)	(15,476)	(23,437)
Discontinued operations:
Loss from discontinued operations		(25,177)	(3,605)	(4,259)		(6,552)	(42,591)	(1,196)	(4,304)	(4,037)	(3,239)	(7,864)						(35,327)	(101,929)	(10,289)
Income tax benefit						3,886	(3,427)	282	(923)	804	819							0	690	1,432
Loss from discontinued operations	$ (2,286)	(25,177)	(3,605)	(4,259)	$ (51,641)	(2,666)	(46,018)	(914)	(5,227)	(3,233)	(2,420)	(7,864)						(35,327)	(101,239)	(8,857)
Net loss		$ (36,507)	$ (12,806)	$ (10,966)		$ (13,586)	$ (38,471)	$ (9,387)	$ (6,978)	$ (11,623)	$ (12,410)	$ (23,772)	$ (47,858)		$ (60,279)	$ (61,444)	$ (31,011)	$ (99,563)	$ (116,715)	$ (32,294)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)	$ (1.23)	$ (0.37)	$ (0.31)	$ (0.23)	$ (0.12)	$ (0.37)	$ 0.25	$ (0.29)	$ (0.06)	$ (0.29)	$ (0.34)	$ (0.54)						$ (2.14)	$ (0.53)	$ (0.80)
Net loss per basic share from discontinued operations (in dollars per share)	(0.09)	(0.83)	(0.12)	(0.14)	(1.76)	(0.09)	(1.56)	(0.03)	(0.18)	(0.11)	(0.08)	(0.26)						(1.18)	(3.44)	(0.30)
Total basic net loss per share (in dollars per share)	(1.32)	(1.20)	(0.43)	(0.37)	(1.88)	(0.46)	(1.31)	(0.32)	(0.24)	(0.40)	(0.42)	(0.80)						(3.32)	(3.97)	(1.10)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)	(1.23)	(0.37)	(0.31)	(0.23)	(0.12)	(0.37)	0.25	(0.29)	(0.06)	(0.29)	(0.34)	(0.54)						(2.14)	(0.53)	(0.80)
Net loss per diluted share from discontinued operations (in dollars per share)	(0.09)	(0.83)	(0.12)	(0.14)	(1.76)	(0.09)	(1.56)	(0.03)	(0.18)	(0.11)	(0.08)	(0.26)						(1.18)	(3.44)	(0.30)
Total diluted net loss per share (in dollars per share)	$ (1.32)	$ (1.20)	$ (0.43)	$ (0.37)	$ (1.88)	$ (0.46)	$ (1.31)	$ (0.32)	$ (0.24)	$ (0.40)	$ (0.42)	$ (0.80)	$ (1.63)	$ (0.82)	$ (2.02)	$ (2.09)	$ (1.06)	$ (3.32)	$ (3.97)	$ (1.10)
Shares used in per share computation:
Basic (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605						29,958	29,466	29,294
Diluted (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605	29,448	29,261	29,838	29,459	29,282	29,958	29,466	29,294
BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business				$ (2,108)								$ (2,108)			$ (2,108)			$ (2,108)	$ 0	$ 0
After Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales													$ 47,931	$ 46,468	72,123
Cost of product sales													30,928	30,401	51,917
Gross profit													17,003	16,067	20,206
Operating costs and expenses:
Research and development													3,369	3,330	6,621
Selling, general and administrative													12,412	14,200	26,675
Legal settlement charge														0
Impairment of goodwill and long-lived and indefinite-lived assets															0
Restructuring costs													1,755	7,766	4,176
Total operating costs and expenses													17,536	25,296	35,364
Operating (loss) income													(533)	(9,229)	(15,158)
Dividend income														0
Interest income													46	18	53
Interest expense													(8,897)	(3,261)	(11,725)
Transition services income															146
Other income (expense), net													376	(11,225)	(476)
Net loss from continuing operations before taxes													(9,008)	(23,697)	(27,160)
Income tax provision (benefit)													8,082	5,316	(78)
Net loss from continuing operations													(926)	(18,381)	(27,238)
Discontinued operations:
Loss from discontinued operations													(43,787)	(7,275)	(33,041)
Income tax benefit													(3,145)	1,623
Loss from discontinued operations													(46,932)	(5,652)	(33,041)
Net loss													$ (47,858)	$ (24,033)	$ (60,279)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)													$ (0.04)	$ (0.63)	$ (0.91)
Net loss per basic share from discontinued operations (in dollars per share)													(1.59)	(0.19)	(1.11)
Total basic net loss per share (in dollars per share)													(1.63)	(0.82)	(2.02)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)													(0.04)	(0.63)	(0.91)
Net loss per diluted share from discontinued operations (in dollars per share)													(1.59)	(0.19)	(1.11)
Total diluted net loss per share (in dollars per share)													$ (1.63)	$ (0.82)	$ (2.02)
Shares used in per share computation:
Basic (in shares)													29,448	29,261	29,838
Diluted (in shares)													29,448	29,261	29,838
After Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business															$ (2,108)
Discontinued Operations
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales		$ 1,270	$ 17,111	19,652		$ 2,169	$ 17,889	$ 19,302				36,764							74,556	71,164
Cost of product sales		1,371	16,789	19,436		1,733	15,210	14,752				36,226							67,115	60,163
Gross profit		(101)	322	216		436	2,679	4,550				538							7,441	11,001
Operating costs and expenses:
Research and development		6	90	79		34	176	184				169							523	739
Selling, general and administrative		640	2,459	4,369		589	2,633	2,751				6,828							11,073	10,396
Impairment of goodwill and long-lived and indefinite-lived assets			1,300									1,300							46,089
Restructuring costs		0	0	0		0	0	0				0							0	0
Total operating costs and expenses		646	3,849	4,448		623	2,809	2,935				8,297							57,685	11,135
Operating (loss) income		(747)	(3,527)	(4,232)		(187)	(130)	1,615				(7,759)							(50,244)	(134)
Interest income		0	0	0		0	0	0				0							0	0
Interest expense		0	0	0		0	0	0				0							0	0
Transition services income		0	0	0		0						0							0
Other income (expense), net		0	0	0		0	0	0				0							0	0
Net loss from continuing operations before taxes		(747)	(3,527)	(4,232)		(187)	(130)	1,615				(7,759)							(50,244)	(134)
Income tax provision (benefit)		0	0	0		1,462	(1,043)	(289)				0							447	452
Net loss from continuing operations		(747)	(3,527)	(4,232)		1,275	(1,173)	1,326				(7,759)							(49,797)	318
Discontinued operations:
Loss from discontinued operations		747	3,527	4,232		187	130	(1,615)				7,759							50,244	134
Income tax benefit						(1,462)	1,043	289											(447)	(452)
Loss from discontinued operations		747	3,527	4,232		(1,275)	1,173	(1,326)				7,759							49,797	(318)
Net loss		$ 0	$ 0	$ 0		$ 0	$ 0	$ 0				$ 0							$ 0	$ 0
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)		$ (0.02)	$ (0.12)	$ (0.14)		$ 0.04	$ (0.04)	$ 0.05				$ (0.26)							$ (1.69)	$ 0.01
Net loss per basic share from discontinued operations (in dollars per share)		0.02	0.12	0.14		(0.04)	0.04	(0.05)				0.26							1.69	(0.01)
Total basic net loss per share (in dollars per share)		0	0	0		0	0	0				0							0	0
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)		(0.02)	(0.12)	(0.14)		0.04	(0.04)	0.05				(0.26)							(1.69)	0.01
Net loss per diluted share from discontinued operations (in dollars per share)		0.02	0.12	0.14		(0.04)	0.04	(0.05)				0.26							1.69	(0.01)
Total diluted net loss per share (in dollars per share)		$ 0	$ 0	$ 0		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0	$ 0
Shares used in per share computation:
Basic (in shares)		0	0	0		0	0	0				0							0	0
Diluted (in shares)		0	0	0		0	0	0	0	0	0	0	0	0	0	0	0		0	0
Discontinued Operations | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business				$ 0								$ 0
Discontinued Operations | Before Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales									$ 17,025	$ 107,136	$ 113,196
Cost of product sales									14,409	97,231	102,243
Gross profit									2,616	9,905	10,953
Operating costs and expenses:
Research and development									206	981	769
Selling, general and administrative									2,289	9,396	10,447
Legal settlement charge										0
Restructuring costs									0	563	1,737
Total operating costs and expenses									2,495	10,940	12,953
Operating (loss) income									121	(1,035)	(2,000)
Dividend income										281	281
Interest income									0	0	0
Interest expense									0	(1,239)	(1,239)
Transition services income									0
Other income (expense), net									0	(281)	(281)
Net loss from continuing operations before taxes									121	(2,274)	(3,239)
Income tax provision (benefit)									(1,133)	441	819
Net loss from continuing operations									(1,012)	(1,833)	(2,420)
Discontinued operations:
Loss from discontinued operations									(121)	2,274	3,239
Income tax benefit									1,133	(441)	(819)
Loss from discontinued operations									1,012	1,833	2,420
Net loss									$ 0	$ 0	$ 0
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)									$ (0.03)	$ (0.06)	$ (0.08)
Net loss per basic share from discontinued operations (in dollars per share)									0.03	0.06	0.08
Total basic net loss per share (in dollars per share)									0	0	0
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)									(0.03)	(0.06)	(0.08)
Net loss per diluted share from discontinued operations (in dollars per share)									0.03	0.06	0.08
Total diluted net loss per share (in dollars per share)									$ 0	$ 0	$ 0
Shares used in per share computation:
Basic (in shares)									0	0	0
Diluted (in shares)									0	0	0
Discontinued Operations | After Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales													$ 37,191	$ 220,331	$ 6,025	$ 7,016	$ 52,749
Cost of product sales													29,962	199,473	5,356	5,622	44,808
Gross profit													7,229	20,858	669	1,394	7,941
Operating costs and expenses:
Research and development													360	1,750	32	81	555
Selling, general and administrative													5,384	19,843	2,109	1,708	7,958
Legal settlement charge														0			0
Impairment of goodwill and long-lived and indefinite-lived assets															300
Restructuring costs													0	2,300	0	0	0
Total operating costs and expenses													5,744	23,893	2,441	1,789	8,513
Operating (loss) income													1,485	(3,035)	(1,772)	(395)	(572)
Dividend income														563
Interest income													0	0	0	0	0
Interest expense													0	(2,478)	0	0	0
Transition services income															0	0	0
Other income (expense), net													0	(562)	0	0	0
Net loss from continuing operations before taxes													1,485	(5,512)	(1,772)	(395)	(572)
Income tax provision (benefit)													(1,332)	1,260	0	130	127
Net loss from continuing operations													153	(4,252)	(1,772)	(265)	(445)
Discontinued operations:
Loss from discontinued operations													(1,485)	5,512	1,772	395	572
Income tax benefit													1,332	(1,260)		(130)	(127)
Loss from discontinued operations													(153)	4,252	1,772	265	445
Net loss													$ 0	$ 0	$ 0	$ 0	$ 0
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)													$ 0.01	$ (0.14)	$ (0.06)	$ (0.01)	$ (0.01)
Net loss per basic share from discontinued operations (in dollars per share)													(0.01)	0.14	0.06	0.01	0.01
Total basic net loss per share (in dollars per share)													0	0	0	0	0
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)													0.01	(0.14)	(0.06)	(0.01)	(0.01)
Net loss per diluted share from discontinued operations (in dollars per share)													(0.01)	0.14	0.06	0.01	0.01
Total diluted net loss per share (in dollars per share)													$ 0	$ 0	$ 0	$ 0	$ 0
Shares used in per share computation:
Basic (in shares)													0	0	0	0	0
Diluted (in shares)													0	0	0	0	0
Discontinued Operations | After Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business															$ 0
Continuing Operations
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales																$ 83,164	$ 74,274
Cost of product sales																54,522	47,278
Gross profit																28,642	26,996
Operating costs and expenses:
Research and development																5,624	4,968
Selling, general and administrative																26,162	21,348
Legal settlement charge																	0
Restructuring costs																7,028	9,837
Total operating costs and expenses																38,814	36,153
Operating (loss) income																(10,172)	(9,157)
Interest income																66	31
Interest expense																(12,573)	(5,823)
Transition services income																5,473	(1,110)
Other income (expense), net																666	(10,920)
Net loss from continuing operations before taxes																(16,540)	(26,979)
Income tax provision (benefit)																5,461	4,775
Net loss from continuing operations																(11,079)	(22,204)
Discontinued operations:
Loss from discontinued operations																(50,338)	(11,577)
Income tax benefit																(27)	2,770
Loss from discontinued operations																(50,365)	(8,807)
Net loss																$ (61,444)	$ (31,011)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)																$ (0.38)	$ (0.76)
Net loss per basic share from discontinued operations (in dollars per share)																(1.71)	(0.30)
Total basic net loss per share (in dollars per share)																(2.09)	(1.06)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)																(0.38)	(0.76)
Net loss per diluted share from discontinued operations (in dollars per share)																(1.71)	(0.30)
Total diluted net loss per share (in dollars per share)																$ (2.09)	$ (1.06)
Shares used in per share computation:
Basic (in shares)																29,459	29,282
Diluted (in shares)																29,459	29,282
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales																			$ 185,786	$ 171,546
Cost of product sales																			135,416	121,075
Gross profit																			50,370	50,471
Operating costs and expenses:
Research and development																			7,841	7,423
Selling, general and administrative																			46,127	37,660
Impairment of goodwill and long-lived and indefinite-lived assets																			46,089
Restructuring costs																			8,961	3,759
Total operating costs and expenses																			109,018	50,605
Operating (loss) income																			(58,648)	(134)
Interest income																			81	48
Interest expense																			(17,357)	(10,387)
Transition services income																			5,814
Other income (expense), net																			641	111
Net loss from continuing operations before taxes																			(69,469)	(11,472)
Income tax provision (benefit)																			5,945	1,903
Net loss from continuing operations																			(63,524)	(9,569)
Discontinued operations:
Loss from discontinued operations																			(51,276)	(28,994)
Income tax benefit																			121	5,898
Loss from discontinued operations																			(51,155)	(23,096)
Net loss				$ (11,351)				$ (9,477)			$ (11,000)	$ (23,800)	$ (47,918)	$ (24,301)	$ (63,992)		$ (29,799)		$ (114,679)	$ (32,665)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)																			$ (2.16)	$ (0.33)
Net loss per basic share from discontinued operations (in dollars per share)																			(1.74)	(0.79)
Total basic net loss per share (in dollars per share)																			(3.90)	(1.12)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)																			(2.16)	(0.33)
Net loss per diluted share from discontinued operations (in dollars per share)																			(1.74)	(0.79)
Total diluted net loss per share (in dollars per share)		$ (1.33)	$ (0.42)	$ (0.38)		$ (0.45)	$ (1.30)	$ (0.32)	$ (0.19)	$ (0.45)	$ (0.38)	$ (0.80)	$ (1.63)	$ (0.83)	$ (2.14)		$ (1.02)		$ (3.90)	$ (1.12)
Shares used in per share computation:
Basic (in shares)																			29,466	29,294
Diluted (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605	29,448	29,261	29,838		29,282		29,466	29,294
As Reported | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business				$ (2,108)								$ (2,108)			$ (2,108)
As Reported | Before Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales		$ 27,600	$ 38,802	43,355		$ 37,399	$ 43,452	$ 41,632	$ 44,690	$ 130,904	$ 135,643	82,157
Cost of product sales		21,622	31,694	37,103		24,533	28,737	31,197	30,249	110,267	119,296	68,797
Gross profit		5,978	7,108	6,252		12,866	14,715	10,435	14,441	20,637	16,347	13,360
Operating costs and expenses:
Research and development		1,964	2,118	2,048		2,000	1,856	1,873	1,843	2,572	2,508	4,166
Selling, general and administrative		10,972	10,773	10,661		14,163	8,012	9,470	8,134	16,106	17,903	21,435
Legal settlement charge										1,763
Impairment of goodwill and long-lived and indefinite-lived assets			1,300									1,300
Restructuring costs		2,741	823	1,047		5,270	707	1,834	2,023	1,662	8,404	1,870
Total operating costs and expenses		15,677	15,014	13,756		21,433	10,575	13,177	12,000	22,103	28,815	28,771
Operating (loss) income		(9,699)	(7,906)	(7,504)		(8,567)	4,140	(2,742)	2,441	(1,466)	(12,468)	(15,411)
Dividend income										281	281
Interest income		22	16	15		20	19	27	13	10	8	31
Interest expense		(5,818)	(4,219)	(3,678)		(4,105)	(3,094)	(6,678)	(2,939)	(3,039)	(3,109)	(7,897)
Transition services income		70	0	0		5,473			(1,110)			0
Other income (expense), net		34	(336)	(180)		454	79	109	72	(11,787)	(21)	(515)
Net loss from continuing operations before taxes		(15,391)	(12,445)	(11,347)		(6,725)	1,144	(9,284)	(1,523)	(16,001)	(15,309)	(23,792)
Income tax provision (benefit)		(70)	(4)	(4)		87	3,085	1,651	58	2,700	4,309	(8)
Net loss from continuing operations		(15,461)	(12,449)	(11,351)		(6,638)	4,229	(7,633)	(1,465)	(13,301)	(11,000)	(23,800)
Discontinued operations:
Loss from discontinued operations		(24,731)	0	0		(6,859)	(42,409)	(2,305)	(4,192)	0	0	0
Income tax benefit						411	(261)	461	159	0	0
Loss from discontinued operations		(24,731)	0	0		(6,448)	(42,670)	(1,844)	(4,033)	0	0	0
Net loss		$ (40,192)	$ (12,449)	$ (11,351)		$ (13,086)	$ (38,441)	$ (9,477)	$ (5,498)	$ (13,301)	$ (11,000)	$ (23,800)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)		$ (0.51)	$ (0.42)	$ (0.38)		$ (0.23)	$ 0.14	$ (0.26)	$ (0.05)	$ (0.45)	$ (0.38)	$ (0.80)
Net loss per basic share from discontinued operations (in dollars per share)		(0.82)	0	0		(0.22)	(1.44)	(0.06)	(0.14)	0	0	0
Total basic net loss per share (in dollars per share)		(1.33)	(0.42)	(0.38)		(0.45)	(1.30)	(0.32)	(0.19)	(0.45)	(0.38)	(0.80)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)		(0.51)	(0.42)	(0.38)		(0.23)	0.14	(0.26)	(0.05)	(0.45)	(0.38)	(0.80)
Net loss per diluted share from discontinued operations (in dollars per share)		(0.82)	0	0		(0.22)	(1.44)	(0.06)	(0.14)	0	0	0
Total diluted net loss per share (in dollars per share)		$ (1.33)	$ (0.42)	$ (0.38)		$ (0.45)	$ (1.30)	$ (0.32)	$ (0.19)	$ (0.45)	$ (0.38)	$ (0.80)
Shares used in per share computation:
Basic (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605
Diluted (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605
As Reported | After Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales													$ 85,084	$ 266,547	77,748	$ 90,140	$ 126,629
Cost of product sales													59,934	229,564	58,178	58,507	90,739
Gross profit													25,150	36,983	19,570	31,633	35,890
Operating costs and expenses:
Research and development													3,729	5,080	6,128	5,722	5,523
Selling, general and administrative													17,482	34,009	31,201	27,659	27,968
Legal settlement charge														1,763			1,763
Impairment of goodwill and long-lived and indefinite-lived assets															300
Restructuring costs													2,541	10,066	4,611	7,530	2,826
Total operating costs and expenses													23,752	50,918	40,132	40,911	38,080
Operating (loss) income													1,398	(13,935)	(20,562)	(9,278)	(2,190)
Dividend income														563
Interest income													46	18	53	66	31
Interest expense													(9,772)	(6,148)	(13,715)	(13,877)	(6,609)
Transition services income															70	5,473	(1,110)
Other income (expense), net													188	(11,808)	(481)	642	64
Net loss from continuing operations before taxes													(8,140)	(31,310)	(34,635)	(16,974)	(9,814)
Income tax provision (benefit)													4,736	7,009	(78)	5,591	1,025
Net loss from continuing operations													(3,404)	(24,301)	(34,713)	(11,383)	(8,789)
Discontinued operations:
Loss from discontinued operations													(44,714)	0	(29,279)	(49,576)	(27,210)
Income tax benefit													200	0		(157)	6,200
Loss from discontinued operations													(44,514)	0	(29,279)	(49,733)	(21,010)
Net loss													$ (47,918)	$ (24,301)	$ (63,992)	$ (61,116)	$ (29,799)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)													$ (0.12)	$ (0.83)	$ (1.16)	$ (0.39)	$ (0.30)
Net loss per basic share from discontinued operations (in dollars per share)													(1.51)	0	(0.98)	(1.69)	(0.72)
Total basic net loss per share (in dollars per share)													(1.63)	(0.83)	(2.14)	(2.08)	(1.02)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)													(0.12)	(0.83)	(1.16)	(0.39)	(0.30)
Net loss per diluted share from discontinued operations (in dollars per share)													(1.51)	0	(0.98)	(1.69)	(0.72)
Total diluted net loss per share (in dollars per share)													$ (1.63)	$ (0.83)	$ (2.14)	$ (2.08)	$ (1.02)
Shares used in per share computation:
Basic (in shares)													29,448	29,261	29,838	29,459	29,282
Diluted (in shares)													29,448	29,261	29,838	29,459	29,282
As Reported | After Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business															$ (2,108)
As Reported | Continuing Operations | After Discontinued Operations Restatement
Operating costs and expenses:
Income tax provision (benefit)														$ 7,009
Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales																			$ 40	$ 492
Cost of product sales																			3,903	1,025
Gross profit																			(3,863)	(533)
Operating costs and expenses:
Research and development																			521	0
Selling, general and administrative																			(395)	457
Impairment of goodwill and long-lived and indefinite-lived assets																			0
Restructuring costs																			(602)	9,596
Total operating costs and expenses																			(476)	8,290
Operating (loss) income																			(3,387)	(8,823)
Interest income																			0	0
Interest expense																			1,806	1,454
Transition services income																			0
Other income (expense), net																			119	(11,080)
Net loss from continuing operations before taxes																			(1,462)	(18,449)
Income tax provision (benefit)																			(287)	4,899
Net loss from continuing operations																			(1,749)	(13,550)
Discontinued operations:
Loss from discontinued operations																			(409)	18,839
Income tax benefit																			122	(4,918)
Loss from discontinued operations																			(287)	13,921
Net loss				$ 385				$ 90			$ (1,410)	$ 28	$ 60	$ 268	$ 3,713		$ (1,212)		$ (2,036)	$ 371
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)																			$ (0.06)	$ (0.46)
Net loss per basic share from discontinued operations (in dollars per share)																			(0.01)	0.48
Total basic net loss per share (in dollars per share)																			(0.07)	0.02
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)																			(0.06)	(0.46)
Net loss per diluted share from discontinued operations (in dollars per share)																			(0.01)	0.48
Total diluted net loss per share (in dollars per share)		$ 0.13	$ (0.01)	$ 0.01		$ (0.01)	$ (0.01)	$ 0	$ (0.05)	$ 0.05	$ (0.04)	$ 0	$ 0	$ 0.01	$ 0.12		$ (0.04)		$ (0.07)	$ 0.02
Shares used in per share computation:
Basic (in shares)																			0	0
Diluted (in shares)		0	0	0		0	0	0	0	0	0	0	0	0	0		0		0	0
Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business				$ 0											$ 0
Restatement | Before Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales		$ 206	$ 173	21		$ 2	$ 38	$ 0	$ 142	$ 24	$ 228	$ 194
Cost of product sales		(2,263)	1,280	78		793	616	340	1,037	(18)	328	1,358
Gross profit		2,469	(1,107)	(57)		(791)	(578)	(340)	(895)	42	(100)	(1,164)
Operating costs and expenses:
Research and development		276	149	242		288	0	0	0	0	0	391
Selling, general and administrative		(53)	(23)	1,811		175	82	232	1,304	0	34	1,788
Legal settlement charge										(1,763)
Impairment of goodwill and long-lived and indefinite-lived assets			0									0
Restructuring costs		(175)	(260)	0		4	(80)	(706)	48	0	0	(260)
Total operating costs and expenses		48	(134)	(55)		467	2	(474)	1,352	(1,763)	34	(189)
Operating (loss) income		2,421	(973)	(2)		(1,258)	(580)	134	(2,247)	1,805	(134)	(975)
Dividend income										0	0
Interest income		0	0	0		0	0	0	0	0	0	0
Interest expense		963	595	432		429	327	548	377	204	205	1,027
Transition services income		8	24	44		0			0			68
Other income (expense), net		(8)	75	(62)		(164)	251	(63)	233	1,800	(1,779)	13
Net loss from continuing operations before taxes		3,384	(279)	412		(993)	(2)	619	(1,637)	3,809	(1,708)	133
Income tax provision (benefit)		0	0	0		(2,014)	2,147	(133)	339	(731)	298	0
Net loss from continuing operations		3,384	(279)	412		(3,007)	2,145	486	(1,298)	3,078	(1,410)	133
Discontinued operations:
Loss from discontinued operations		301	(78)	(27)		494	(52)	(506)	(233)	(1,763)	0	(105)
Income tax benefit						2,013	(2,123)	110	51	363	0
Loss from discontinued operations		301	(78)	(27)		2,507	(2,175)	(396)	(182)	(1,400)	0	(105)
Net loss		$ 3,685	$ (357)	$ 385		$ (500)	$ (30)	$ 90	$ (1,480)	$ 1,678	$ (1,410)	$ 28
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)		$ 0.12	$ (0.01)	$ 0.01		$ (0.10)	$ 0.07	$ 0.02	$ (0.04)	$ 0.10	$ (0.04)	$ 0
Net loss per basic share from discontinued operations (in dollars per share)		0.01	0	0		0.09	(0.08)	(0.02)	(0.01)	(0.05)	0	0
Total basic net loss per share (in dollars per share)		0.13	(0.01)	0.01		(0.01)	(0.01)	0	(0.05)	0.05	(0.04)	0
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)		0.12	(0.01)	0.01		(0.10)	0.07	0.02	(0.04)	0.10	(0.04)	0
Net loss per diluted share from discontinued operations (in dollars per share)		0.01	0	0		0.09	(0.08)	(0.02)	(0.01)	(0.05)	0	0
Total diluted net loss per share (in dollars per share)		$ 0.13	$ (0.01)	$ 0.01		$ (0.01)	$ (0.01)	$ 0	$ (0.05)	$ 0.05	$ (0.04)	$ 0
Shares used in per share computation:
Basic (in shares)		0	0	0		0	0	0	0	0	0	0
Diluted (in shares)		0	0	0		0	0	0	0	0	0	0
Restatement | Before Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business				$ (2,108)								$ (2,108)
Restatement | After Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales													$ 38	$ 252	400	$ 40	$ 394
Cost of product sales													956	310	(905)	1,637	1,347
Gross profit													(918)	(58)	1,305	(1,597)	(953)
Operating costs and expenses:
Research and development													0	0	525	(17)	0
Selling, general and administrative													314	34	(2,417)	211	1,338
Legal settlement charge														(1,763)			(1,763)
Impairment of goodwill and long-lived and indefinite-lived assets															0
Restructuring costs													(786)	0	(435)	(502)	7,011
Total operating costs and expenses													(472)	(1,729)	(2,327)	(308)	6,586
Operating (loss) income													(446)	1,671	3,632	(1,289)	(7,539)
Dividend income														0
Interest income													0	0	0	0	0
Interest expense													875	409	1,990	1,304	786
Transition services income															76	0	0
Other income (expense), net													188	21	5	24	(10,984)
Net loss from continuing operations before taxes													617	2,101	5,703	39	(17,737)
Income tax provision (benefit)													2,014	(433)	0	0	3,877
Net loss from continuing operations													2,631	1,668	5,703	39	(13,860)
Discontinued operations:
Loss from discontinued operations													(558)	(1,763)	(1,990)	(367)	16,205
Income tax benefit													(2,013)	363		0	(3,557)
Loss from discontinued operations													(2,571)	(1,400)	(1,990)	(367)	12,648
Net loss													$ 60	$ 268	$ 3,713	$ (328)	$ (1,212)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)													$ 0.09	$ 0.06	$ 0.19	$ 0	$ (0.47)
Net loss per basic share from discontinued operations (in dollars per share)													(0.09)	(0.05)	(0.07)	(0.01)	0.43
Total basic net loss per share (in dollars per share)													0	0.01	0.12	(0.01)	(0.04)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)													0.09	0.06	0.19	0	(0.47)
Net loss per diluted share from discontinued operations (in dollars per share)													(0.09)	(0.05)	(0.07)	(0.01)	0.43
Total diluted net loss per share (in dollars per share)													$ 0	$ 0.01	$ 0.12	$ (0.01)	$ (0.04)
Shares used in per share computation:
Basic (in shares)													0	0	0	0	0
Diluted (in shares)													0	0	0	0	0
Restatement | After Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business															$ 0
Restatement | Continuing Operations | After Discontinued Operations Restatement
Operating costs and expenses:
Income tax provision (benefit)														$ (433)
As Restated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales																			$ 185,826	$ 172,038
Cost of product sales																			139,319	122,100
Gross profit																			46,507	49,938
Operating costs and expenses:
Research and development																			8,362	7,423
Selling, general and administrative																			45,732	38,117
Impairment of goodwill and long-lived and indefinite-lived assets																			46,089
Restructuring costs																			8,359	13,355
Total operating costs and expenses																			108,542	58,895
Operating (loss) income																			(62,035)	(8,957)
Interest income																			81	48
Interest expense																			(15,551)	(8,933)
Transition services income																			5,814
Other income (expense), net																			760	(10,969)
Net loss from continuing operations before taxes																			(70,931)	(29,921)
Income tax provision (benefit)																			5,658	6,802
Net loss from continuing operations																			(65,273)	(23,119)
Discontinued operations:
Loss from discontinued operations																			(51,685)	(10,155)
Income tax benefit																			243	980
Loss from discontinued operations																			(51,442)	(9,175)
Net loss														$ (24,033)					$ (116,715)	$ (32,294)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)																			$ (2.22)	$ (0.79)
Net loss per basic share from discontinued operations (in dollars per share)																			(1.75)	(0.31)
Total basic net loss per share (in dollars per share)																			(3.97)	(1.10)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)																			(2.22)	(0.79)
Net loss per diluted share from discontinued operations (in dollars per share)																			(1.75)	(0.31)
Total diluted net loss per share (in dollars per share)		$ (1.20)	$ (0.43)	$ (0.37)		$ (0.46)	$ (1.31)	$ (0.32)	$ (0.24)	$ (0.40)	$ (0.42)	$ (0.80)	$ (1.63)	$ (0.82)	$ (2.02)		$ (1.06)		$ (3.97)	$ (1.10)
Shares used in per share computation:
Basic (in shares)																			29,466	29,294
Diluted (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605	29,448	29,261	29,838		29,282		29,466	29,294
As Restated | Before Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales		$ 27,806	$ 38,975	$ 43,376		$ 37,401	$ 43,490	$ 41,632	$ 44,832	$ 130,928	$ 135,871	$ 82,351
Cost of product sales		19,359	32,974	37,181		25,326	29,353	31,537	31,286	110,249	119,624	70,155
Gross profit		8,447	6,001	6,195		12,075	14,137	10,095	13,546	20,679	16,247	12,196
Operating costs and expenses:
Research and development		2,240	2,267	2,290		2,288	1,856	1,873	1,843	2,572	2,508	4,557
Selling, general and administrative		10,919	10,750	12,472		14,338	8,094	9,702	9,438	16,106	17,937	23,223
Legal settlement charge										0
Impairment of goodwill and long-lived and indefinite-lived assets			1,300									1,300
Restructuring costs		2,566	563	1,047		5,274	627	1,128	2,071	1,662	8,404	1,610
Total operating costs and expenses		15,725	14,880	13,701		21,900	10,577	12,703	13,352	20,340	28,849	28,582
Operating (loss) income		(7,278)	(8,879)	(7,506)		(9,825)	3,560	(2,608)	194	339	(12,602)	(16,386)
Dividend income										281	281
Interest income		22	16	15		20	19	27	13	10	8	31
Interest expense		(4,855)	(3,624)	(3,246)		(3,676)	(2,767)	(6,130)	(2,562)	(2,835)	(2,904)	(6,870)
Transition services income		78	24	44		5,473			(1,110)			68
Other income (expense), net		26	(261)	(242)		290	330	46	305	(9,987)	(1,800)	(502)
Net loss from continuing operations before taxes		(12,007)	(12,724)	(10,935)		(7,718)	1,142	(8,665)	(3,160)	(12,192)	(17,017)	(23,659)
Income tax provision (benefit)		(70)	(4)	(4)		(1,927)	5,232	1,518	397	1,969	4,607	(8)
Net loss from continuing operations		(12,077)	(12,728)	(10,939)		(9,645)	6,374	(7,147)	(2,763)	(10,223)	(12,410)	(23,667)
Discontinued operations:
Loss from discontinued operations		(24,430)	(78)	(27)		(6,365)	(42,461)	(2,811)	(4,425)	(1,763)	0	(105)
Income tax benefit						2,424	(2,384)	571	210	363	0
Loss from discontinued operations		(24,430)	(78)	(27)		(3,941)	(44,845)	(2,240)	(4,215)	(1,400)	0	(105)
Net loss		$ (36,507)	$ (12,806)	$ (10,966)		$ (13,586)	$ (38,471)	$ (9,387)	$ (6,978)	$ (11,623)	$ (12,410)	$ (23,772)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)		$ (0.39)	$ (0.43)	$ (0.37)		$ (0.33)	$ 0.21	$ (0.24)	$ (0.09)	$ (0.35)	$ (0.42)	$ (0.80)
Net loss per basic share from discontinued operations (in dollars per share)		(0.81)	0	0		(0.13)	(1.52)	(0.08)	(0.15)	(0.05)	0	0
Total basic net loss per share (in dollars per share)		(1.20)	(0.43)	(0.37)		(0.46)	(1.31)	(0.32)	(0.24)	(0.40)	(0.42)	(0.80)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)		(0.39)	(0.43)	(0.37)		(0.33)	0.21	(0.24)	(0.09)	(0.35)	(0.42)	(0.80)
Net loss per diluted share from discontinued operations (in dollars per share)		(0.81)	0	0		(0.13)	(1.52)	(0.08)	(0.15)	(0.05)	0	0
Total diluted net loss per share (in dollars per share)		$ (1.20)	$ (0.43)	$ (0.37)		$ (0.46)	$ (1.31)	$ (0.32)	$ (0.24)	$ (0.40)	$ (0.42)	$ (0.80)
Shares used in per share computation:
Basic (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605
Diluted (in shares)		30,304	29,634	29,577		29,482	29,471	29,424	29,323	29,280	29,242	29,605
As Restated | Before Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business				$ (2,108)								$ (2,108)
As Restated | After Discontinued Operations Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Product sales													$ 85,122	$ 266,799	$ 78,148	$ 90,180	$ 127,023
Cost of product sales													60,890	229,874	57,273	60,144	92,086
Gross profit													24,232	36,925	20,875	30,036	34,937
Operating costs and expenses:
Research and development													3,729	5,080	6,653	5,705	5,523
Selling, general and administrative													17,796	34,043	28,784	27,870	29,306
Legal settlement charge														0			0
Impairment of goodwill and long-lived and indefinite-lived assets															300
Restructuring costs													1,755	10,066	4,176	7,028	9,837
Total operating costs and expenses													23,280	49,189	37,805	40,603	44,666
Operating (loss) income													952	(12,264)	(16,930)	(10,567)	(9,729)
Dividend income														563
Interest income													46	18	53	66	31
Interest expense													(8,897)	(5,739)	(11,725)	(12,573)	(5,823)
Transition services income															146	5,473	(1,110)
Other income (expense), net													376	(11,787)	(476)	666	(10,920)
Net loss from continuing operations before taxes													(7,523)	(29,209)	(28,932)	(16,935)	(27,551)
Income tax provision (benefit)													6,750	6,576	(78)	5,591	4,902
Net loss from continuing operations													(773)	(22,633)	(29,010)	(11,344)	(22,649)
Discontinued operations:
Loss from discontinued operations													(45,272)	(1,763)	(31,269)	(49,943)	(11,005)
Income tax benefit													(1,813)	363		(157)	2,643
Loss from discontinued operations													(47,085)	(1,400)	(31,269)	(50,100)	(8,362)
Net loss													$ (47,858)	$ (24,033)	$ (60,279)	$ (61,444)	$ (31,011)
Basic net loss per share:
Net loss per basic share from continuing operations (in dollars per share)													$ (0.03)	$ (0.77)	$ (0.97)	$ (0.39)	$ (0.77)
Net loss per basic share from discontinued operations (in dollars per share)													(1.60)	(0.05)	(1.05)	(1.70)	(0.29)
Total basic net loss per share (in dollars per share)													(1.63)	(0.82)	(2.02)	(2.09)	(1.06)
Diluted net loss per share:
Net loss per diluted share from continuing operations (in dollars per share)													(0.03)	(0.77)	(0.97)	(0.39)	(0.77)
Net loss per diluted share from discontinued operations (in dollars per share)													(1.60)	(0.05)	(1.05)	(1.70)	(0.29)
Total diluted net loss per share (in dollars per share)													$ (1.63)	$ (0.82)	$ (2.02)	$ (2.09)	$ (1.06)
Shares used in per share computation:
Basic (in shares)													29,448	29,261	29,838	29,459	29,282
Diluted (in shares)													29,448	29,261	29,838	29,459	29,282
As Restated | After Discontinued Operations Restatement | BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business															$ (2,108)
As Restated | Continuing Operations | After Discontinued Operations Restatement
Operating costs and expenses:
Income tax provision (benefit)														$ 6,576