Summary of Significant Accounting Policies - Assets and liabilities of Global Wells (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 961,000	$ 448,000
Accounts receivable	25,579,000	23,838,000
Prepaid expenses and other current assets	3,422,000	6,530,000
Property and equipment, net	93,865,000	95,533,000
Other assets	159,000	161,000
Total assets	176,870,000	181,104,000
Accounts payable	17,186,000	20,069,000
Accrued expenses	5,510,000	4,959,000
Customer deposits	635,000	551,000
Due to Lollicup USA Inc.	3,420,000	5,038,000
Debt, current portion	11,841,000	11,364,000
Other liabilities	3,726,000	5,049,000
Total liabilities	133,952,000	141,236,000
Global Wells
Variable Interest Entity [Line Items]
Cash and Cash Equivalents, at Carrying Value	65,000	81,000
Accounts receivable		343,000
Prepaid expenses and other current assets	99,000	98,000
Property and equipment, net	47,523,000	47,826,000
Other assets	5,170,000	5,260,000
Total assets	52,857,000	53,608,000
Accounts payable		564,000
Accrued expenses	219,000	128,000
Customer deposits	72,000
Due to Lollicup USA Inc.	2,622,000	2,990,000
Debt, current portion	702,000	694,000
Long-term debt, net of current portion	36,519,000	36,697,000
Other liabilities	2,625,000	3,906,000
Total liabilities	$ 42,759,000	$ 44,979,000