Summary of Significant Accounting Policies - Assets and Liabilities of Global Wells (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 6,820,000	$ 6,483,000
Accounts receivable	43,337,000	32,776,000
Prepaid expenses and other current assets	6,036,000	5,141,000
Property and equipment, net	92,138,000	93,475,000
Other assets	389,000	477,000
Total assets	240,380,000	207,599,000
Accounts payable	24,073,000	18,470,000
Accrued expenses	8,343,000	7,813,000
Income taxes payable	1,977,000	85,000
Customer deposits	1,448,000	1,215,000
Due to Lollicup USA Inc.	1,260,000	2,003,000
Long-term debt, current portion	1,190,000	1,178,000
Long-term debt, net of current portion	200,000	200,000
Other liabilities	2,524,000	3,837,000
Total liabilities	100,137,000	75,574,000
Global Wells
Variable Interest Entity [Line Items]
Cash and cash equivalents	5,205,000	1,163,000
Accounts receivable	257,000	384,000
Prepaid expenses and other current assets	162,000	63,000
Property and equipment, net	46,309,000	46,612,000
Other assets	4,641,000	4,762,000
Total assets	56,574,000	52,984,000
Accounts payable	184,000	497,000
Accrued expenses	203,000	68,000
Income taxes payable	0	9,000
Customer deposits	81,000	88,000
Due to Lollicup USA Inc.	0	2,620,000
Long-term debt, current portion	1,190,000	1,178,000
Long-term debt, net of current portion	41,954,000	35,339,000
Other liabilities	1,324,000	2,636,000
Total liabilities	$ 44,936,000	$ 42,435,000