Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss)	$ (29,699)	$ (3,188)	$ (1,383)
Adjustments to reconcile net (loss) to net cash flows provided by operating activities:
Provision for loss (gains) on accounts receivable	29	(23)	15
Loss on disposal of equipment	538	1,805	787
Share-based compensation	24,998	10,925	7,834
Inventory obsolescence	349	232	113
Depreciation and amortization	30,468	21,125	15,922
Amortization of deferred financing costs and loan discount	1,212	834	211
Change in operating lease right of use asset	1,329	1,289	432
Loss on equity method investment	2,005	0	0
Changes in operating assets and liabilities:
Accounts receivable	(16,371)	166	(8,019)
Inventories	(16,804)	(6,808)	(3,338)
Prepaid expenses and other current assets	(2,891)	9,437	(11,969)
Other assets	(7,899)	(719)	118
Accounts payable	14,958	(5,922)	2,777
Accrued expenses	(273)	(6,762)	13,082
Other lease liabilities	(1,302)	(1,198)	(265)
Net cash flows provided by operating activities	647	21,193	16,317
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of short-term investments	0	(20,000)	0
Proceeds from maturities of short-term investments	0	20,000	0
Investments in equity method investment	0	(27,894)	0
Acquisitions of property, plant and equipment, software and deposits on equipment	(322,099)	(134,568)	(70,633)
Net cash flows used in investing activities	(322,099)	(162,462)	(70,633)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from common shares issued in primary offering, net of issuance cost	332,172	252,062	0
Proceeds from exercise of options to purchase common stock	2,271	5,441	4,460
Tax withholdings related to net shares settlements of restricted stock units	(4,187)	(2,568)	(1,295)
Proceeds from borrowings under Credit Facilities	0	20,933	72,291
Repayment of borrowings under Credit Facilities	0	(76,000)	(18,500)
Financing fees paid in connection with borrowings	(3,263)	(824)	(723)
Net cash flows provided by financing activities	326,993	199,044	56,234
NET CHANGE IN CASH AND CASH EQUIVALENTS	5,541	57,775	1,917
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	67,247	9,472	7,554
CASH AND CASH EQUIVALENTS, END OF PERIOD	72,788	67,247	9,472
SUPPLEMENTAL CASH FLOW INFORMATION:
Taxes paid	182	88	9
Interest paid	1,730	1,061	522
NON-CASH FINANCING AND INVESTING ACTIVITIES:
Property, plant and equipment purchases in accounts payable and accrued expenses	22,482	11,281	7,575
Non-cash acquisitions of property, plant and equipment	$ 0	$ 0	$ 1,750