Revision of Prior Financial Statements - Summary of impacted financial statements (Details) - USD ($)	3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2019	Sep. 30, 2019	Dec. 31, 2019
Balance Sheet
Inventories, net	$ 16,322,000	$ 23,210,000	$ 25,604,000	$ 27,646	$ 35,377	$ 27,646	$ 25,604,000	$ 23,210,000
Other intangible assets, net	0	20,323,000	20,818,000	21,530	22,218	21,530	20,818,000	20,323,000
Total assets	136,774,000	230,600,000	247,868,000	262,260	281,051	262,260	247,868,000	230,600,000
Total Liabilities and Stockholders’ Equity	136,774,000	230,600,000	247,868,000	262,260	281,051	262,260	247,868,000	230,600,000
Income Statement
Operating expenses (excluding depreciation and amortization)	22,841,000	42,389,000	23,622,000	38,121,000	43,968,000	82,089,000	105,711,000	148,100,000
Income tax benefit (expense)	6,169,000	(956,000)	191,000	192,000	311,000	503,000	694,000	(262,000)
Loss from continuing operations	(63,967,000)	(36,896,000)	(11,160,000)	(12,805,000)	(15,212,000)	(28,017,000)	(39,177,000)	(76,073,000)
Income from discontinued operations, net of tax	0	(2,425,000)	117,000	(1,608,000)	46,074,000	44,466,000	44,583,000	42,158,000
Net (loss) income	$ (63,967,000)	(39,321,000)	(11,043,000)	(14,413,000)	30,862,000	16,449,000	5,406,000	(33,915,000)
As previously reported
Balance Sheet
Inventories, net		21,697,000	24,333,000	26,442	34,358	26,442	24,333,000	21,697,000
Other intangible assets, net		23,083,000	23,578,000	24,290	24,978	24,290	23,578,000	23,083,000
Total assets		231,847,000	249,357,000	263,816	282,792	263,816	249,357,000	231,847,000
Total Liabilities and Stockholders’ Equity		231,847,000	249,357,000	263,816	282,792	263,816	249,357,000	231,847,000
Income Statement
Operating expenses (excluding depreciation and amortization)		42,631,000	23,689,000	38,306,000	44,599,000	82,905,000	106,594,000	149,225,000
Income tax benefit (expense)		(956,000)	191,000	192,000	774,000	966,000	1,157,000	201,000
Loss from continuing operations		(37,138,000)	(11,227,000)	(12,990,000)	(15,380,000)	(28,370,000)	(39,597,000)	(76,735,000)
Income from discontinued operations, net of tax		(2,425,000)	117,000	(1,608,000)	48,372,000	46,764,000	46,881,000	44,456,000
Net (loss) income		(39,563,000)	(11,110,000)	(14,598,000)	32,992,000	18,394,000	7,284,000	(32,279,000)
Revisions
Balance Sheet
Inventories, net		1,513,000	1,271,000	1,204	1,019	1,204	1,271,000	1,513,000
Other intangible assets, net		(2,760,000)	(2,760,000)	(2,760)	(2,760)	(2,760)	(2,760,000)	(2,760,000)
Total assets		(1,247,000)	(1,489,000)	(1,556)	(1,741)	(1,556)	(1,489,000)	(1,247,000)
Total Liabilities and Stockholders’ Equity		(1,247,000)	(1,489,000)	(1,556)	(1,741)	(1,556)	(1,489,000)	(1,247,000)
Income Statement
Operating expenses (excluding depreciation and amortization)		(242,000)	(67,000)	(185,000)	(631,000)	(816,000)	(883,000)	(1,125,000)
Income tax benefit (expense)		0	0	0	(463,000)	(463,000)	(463,000)	(463,000)
Loss from continuing operations		242,000	67,000	185,000	168,000	353,000	420,000	662,000
Income from discontinued operations, net of tax		0	0	0	(2,298,000)	(2,298,000)	(2,298,000)	(2,298,000)
Net (loss) income		$ 242,000	$ 67,000	$ 185,000	$ (2,130,000)	$ (1,945,000)	$ (1,878,000)	$ (1,636,000)