CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 38,903	$ 23,076
Short-term investments	21,531	26,343
Allowance for bad debt	562	392
Prepaid expenses and other current assets	4,869	6,219
Property and equipment, net	90,132	95,226
Other non-current assets	1,092	619
Accrued expenses	12,751	10,576
Deferred revenue	909	951
Long-term debt, current portion	1,165	1,122
Other current liabilities	3,700	3,200
Debt discount	156	203
Other non-current liabilities	$ 363	$ 26
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	20,044,105	19,988,482
Common stock, shares outstanding (in shares)	20,021,105	19,965,482
Treasury stock, par value (in dollars per share)	$ 0.001	$ 0.001
Treasury stock, shares (in shares)	23,000	23,000
VIE, Primary Beneficiary
Cash and cash equivalents	$ 1,210	$ 13,566
Short-term investments	11,128	0
Prepaid expenses and other current assets	58	82
Property and equipment, net	43,275	44,185
Other non-current assets	42	53
Accounts payable	67	63
Accrued expenses	366	591
Deferred revenue	0	116
Long-term debt, current portion	1,165	1,122
Other current liabilities	2,186	1,302
Debt discount	156	203
Long-term debt, net of current portion	47,565	48,396
Other non-current liabilities	$ 116	$ 0