Business and Summary of Significant Accounting Policies - Immaterial Revisions of Previously Reported Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Consolidated Balance Sheets
Prepaid and other current assets	$ 5,271	$ 4,589	$ 4,589	$ 5,271	$ 6,196	$ 2,012
Total current assets	42,811	54,232	54,232	42,811	45,610	91,964
Total assets	172,400	186,759	186,759	172,400	179,774	226,253
Accumulated deficit	99,941	(395,105)	(395,105)	99,941	(504,632)	(430,157)
Total stockholder's equity	99,941	113,833	113,833	99,941	3,186	40,877	$ 86,973
Total liabilities and stockholder's equity	172,400	186,759	186,759	172,400	179,774	226,253
Condensed Consolidated Statements of Operations
Transaction costs	226	43	373	599	3,099	0
Total operating expenses	18,115	17,883	32,207	50,322	74,593	55,992
Loss from continuing operations	(11,838)	(13,297)	(22,260)	(34,098)	(49,876)	(43,991)
Loss from continuing operations before income taxes	(12,543)	(14,033)	(23,955)	(36,498)	(132,078)	(49,719)
Net loss from continuing operations	(13,542)	(14,625)	(24,960)	(38,502)	(134,512)	(51,561)
Net loss	$ (13,754)	$ (14,625)	$ 35,052	$ 21,298	(74,475)	(50,425)
Basic loss per share (in dollars per share)	$ (27,084,000)	$ (29,250)	$ (49,920)	$ (77,004,000)
Diluted loss per share (in dollars per share)	$ (27,084,000)	$ (29,250)	$ (49,920)	$ (77,004,000)
Condensed Consolidated Statements of Comprehensive (Loss) Income
Net (loss) income	$ (13,754)	$ (14,625)	$ 35,052	$ 21,298	(74,475)	(50,425)
Other comprehensive loss	(14,828)	(15,107)	34,808	19,980	$ (75,708)	$ (51,541)
As Reported
Condensed Consolidated Balance Sheets
Prepaid and other current assets	5,870	4,962	4,962	5,870
Total current assets	43,410	54,605	54,605	43,410
Total assets	172,999	187,132	187,132	172,999
Accumulated deficit	100,540	(394,732)	(394,732)	100,540
Total stockholder's equity	100,540	114,206	114,206	100,540
Total liabilities and stockholder's equity	172,999	187,132	187,132	172,999
Condensed Consolidated Statements of Operations
Transaction costs	0	0	0	0
Total operating expenses	17,889	17,840	31,834	49,723
Loss from continuing operations	(11,612)	(13,254)	(21,887)	(33,499)
Loss from continuing operations before income taxes	(12,317)	(13,990)	(23,582)	(35,899)
Net loss from continuing operations	(13,316)	(14,582)	(24,587)	(37,903)
Net loss	$ (13,528)	$ (14,582)	$ 35,425	$ 21,897
Basic loss per share (in dollars per share)	$ (26,632,000)	$ (29,164)	$ (49,174)	$ (75,806,000)
Diluted loss per share (in dollars per share)	$ (26,632,000)	$ (29,164)	$ (49,174)	$ (75,806,000)
Condensed Consolidated Statements of Comprehensive (Loss) Income
Net (loss) income	$ (13,528)	$ (14,582)	$ 35,425	$ 21,897
Other comprehensive loss	(14,602)	(15,064)	35,181	20,579
Adjustment
Condensed Consolidated Balance Sheets
Prepaid and other current assets	(599)	(373)	(373)	(599)
Total current assets	(599)	(373)	(373)	(599)
Total assets	(599)	(373)	(373)	(599)
Accumulated deficit	(599)	(373)	(373)	(599)
Total stockholder's equity	(599)	(373)	(373)	(599)
Total liabilities and stockholder's equity	(599)	(373)	(373)	(599)
Condensed Consolidated Statements of Operations
Transaction costs	226	43	373	599
Total operating expenses	226	43	373	599
Loss from continuing operations	(226)	(43)	(373)	(599)
Loss from continuing operations before income taxes	(226)	(43)	(373)	(599)
Net loss from continuing operations	(226)	(43)	(373)	(599)
Net loss	$ (226)	$ (43)	$ (373)	$ (599)
Basic loss per share (in dollars per share)	$ (452,000)	$ (86)	$ (746)	$ (1,198,000)
Diluted loss per share (in dollars per share)	$ (452,000)	$ (86)	$ (746)	$ (1,198,000)
Condensed Consolidated Statements of Comprehensive (Loss) Income
Net (loss) income	$ (226)	$ (43)	$ (373)	$ (599)
Other comprehensive loss	$ (226)	$ (43)	$ (373)	$ (599)