Fair Value Measurement (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Decrease in interest expense	$ 48,700
Impairment losses	1,940,400
Aggregate fair value	$ 347,400
Outstanding principal and accrued interest		$ 89,296,000

Amount of increase (decrease) in interest expense on long-term debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (c)
-Subparagraph (2)(i)

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (a)

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (c)
-Subparagraph (2)(ii)

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (c)
-Subparagraph (2)(iii)

Name:	us-gaap_InterestExpenseLongTermDebtIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration