CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 268,633	$ 296,871
Accounts receivable, net of allowance for doubtful accounts	68,419	56,754
Inventories, net	80,794	63,238
Prepaid expenses	16,026	7,615
Other current assets	3,126	2,841
Total Current Assets	436,998	427,319
Property, plant and equipment, net	1,065,869	979,164
Deposits on equipment	1,047	1,895
Operating lease right of use assets	3,366	3,616
Long term investment in equity securities	33,446	23,528
Other assets	34,152	28,899
Total Assets	1,574,878	1,464,421
CURRENT LIABILITIES:
Accounts payable	39,164	36,096
Accrued expenses	56,263	49,816
Current operating lease liabilities	1,322	1,312
Current finance lease liabilities	2,120	1,998
Total Current Liabilities	98,869	89,222
Convertible senior notes	395,163	393,074
Long term operating lease liabilities	2,213	2,591
Long term finance lease liabilities	23,273	26,080
Total Liabilities	519,518	510,967
Commitments and contingencies	0	0
STOCKHOLDERS' EQUITY:
Common stock — voting, $0.001 par value, 200,000 shares authorized, 48,716 issued and 48,702 outstanding on December 31, 2024, and 48,277 issued and 48,263 outstanding on December 31, 2023	49	48
Additional paid-in capital	1,338,160	1,282,984
Accumulated deficit	(281,806)	(328,731)
Accumulated other comprehensive loss	(787)	(591)
Treasury stock, at cost — 14 shares on December 31, 2024 and on December 31, 2023	(256)	(256)
Total Stockholders' Equity	1,055,360	953,454
Total Liabilities and Stockholders' Equity	$ 1,574,878	$ 1,464,421