For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - Supplier	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Purchases \| Keary Global and its affiliate, Keary International - related parties
Concentration Risk [Line Items]
Concentration risk percentage	14.80%	14.00%	12.20%
Purchases \| Shanghai Quantong Packaging Printing Co., Ltd.
Concentration Risk [Line Items]
Concentration risk percentage		19.00%		11.00%
Accounts payable \| Keary Global and its affiliate, Keary International - related parties
Concentration Risk [Line Items]
Concentration risk percentage			13.00%		18.00%
Accounts payable \| Taizhou Fuling Plastics Co.,Ltd
Concentration Risk [Line Items]
Concentration risk percentage			10.00%		11.00%