Summary of Significant Accounting Policies - Assets and Liabilities of Global Wells (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 3,501,000	$ 6,483,000
Accounts receivable	38,473,000	32,776,000
Prepaid expenses and other current assets	6,691,000	5,141,000
Property and equipment, net	95,044,000	93,475,000
Other assets	840,000	477,000
Total assets	247,188,000	207,599,000
Accounts payable	23,325,000	18,470,000
Accrued expenses	7,873,000	7,813,000
Income taxes payable	0	85,000
Customer deposits	1,619,000	1,215,000
Due to Lollicup USA Inc.	3,204,000	2,003,000
Long-term debt, current portion	910,000	1,178,000
Long-term debt, net of current portion	239,000	200,000
Other liabilities	3,004,000	3,837,000
Total liabilities	99,667,000	75,574,000
Global Wells
Variable Interest Entity [Line Items]
Cash and cash equivalents	932,000	1,163,000
Accounts receivable	378,000	384,000
Prepaid expenses and other current assets	200,000	63,000
Due from Lollicup USA Inc.	4,700,000	0
Property and equipment, net	46,006,000	46,612,000
Other assets	4,519,000	4,762,000
Total assets	56,735,000	52,984,000
Accounts payable	4,000	497,000
Accrued expenses	281,000	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	910,000	1,178,000
Long-term debt, net of current portion	42,016,000	35,339,000
Other liabilities	1,302,000	2,636,000
Total liabilities	$ 44,594,000	$ 42,435,000