Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 55,631,000	$ 51,175,000	$ 76,660,000
Adjustments to reconcile net income to net cash flows from operating activities:
Provision for / (recovery of) credit losses on accounts receivable	1,156,000	(775,000)	2,162,000
Reserve for product returns	4,746,000	2,494,000	1,795,000
Recovery of credit losses on notes receivable	(78,000)	(9,000)	(359,000)
Provision for excess and obsolete inventory	0	448,000	1,451,000
Amortization on patents and tooling	1,359,000	1,240,000	882,000
Amortization and depreciation	30,870,000	29,715,000	27,520,000
Amortization of debt discount and debt issuance costs	3,126,000	15,823,000	108,000
Amortization of operating leases	10,499,000	9,692,000	8,888,000
Deferred income taxes	(55,039,000)	(10,115,000)	(3,256,000)
Change in fair value of contingent liability	0	0	(2,595,000)
Stock-based compensation	52,654,000	38,694,000	29,176,000
Acquired in-process research and development	0	0	3,297,000
Gain on sale of investment	0	0	(24,737,000)
(Gain on) / impairment of investment or intangible assets	(140,000)	86,000	(676,000)
Loss on early extinguishment of debt	0	185,000	0
Changes in operating assets and liabilities (net of business acquisitions):
Accounts receivable	(24,346,000)	(23,941,000)	(10,098,000)
Inventory	(40,308,000)	(31,443,000)	(10,647,000)
Other current and non-current assets	(8,952,000)	(11,912,000)	(2,683,000)
Accounts payable, accrued expenses and other current liabilities	32,938,000	39,418,000	13,781,000
Deferred revenue	3,428,000	2,308,000	2,031,000
Operating lease liabilities	(12,723,000)	(11,809,000)	(10,177,000)
Other liabilities	2,080,000	1,883,000	(443,000)
Cash flows from operating activities	56,901,000	103,157,000	102,080,000
Cash flows used in investing activities:
Business acquisition, net of cash acquired	(31,730,000)	0	(26,299,000)
Additions to property and equipment	(28,640,000)	(11,062,000)	(16,141,000)
Purchases of in-process research and development	0	0	(3,297,000)
Issuances of notes receivable	(3,000,000)	0	(1,200,000)
Receipt of payments on notes receivable	61,000	59,000	2,026,000
Purchase of investment in unconsolidated entity	(5,150,000)	(5,000,000)	0
Proceeds from sale of investment	140,000	0	25,687,000
Purchases of patents, patent licenses and developed technology	0	(4,362,000)	(1,050,000)
Cash flows used in investing activities	(68,319,000)	(20,365,000)	(20,274,000)
Cash flows (used in) / from financing activities:
Proceeds from credit facility	0	0	50,000,000
Repayments of credit facility	0	(110,000,000)	(3,000,000)
Proceeds from issuance of convertible senior notes	0	500,000,000	0
Payments of debt issuance costs	0	(15,698,000)	0
Payments of deferred consideration for business acquisitions	(1,500,000)	(1,160,000)	(1,538,000)
Purchases of treasury stock	(78,844,000)	0	(5,149,000)
Payments of tax withholdings related to vesting of restricted stock units	0	(4,476,000)	0
Issuances of common stock from equity-based plans	4,020,000	5,704,000	11,711,000
Cash flows (used in) / from financing activities	(76,324,000)	374,370,000	52,024,000
Net (decrease) / increase in cash, cash equivalents and restricted cash	(87,742,000)	457,162,000	133,830,000
Cash, cash equivalents and restricted cash at beginning of the period	710,621,000	253,459,000	119,629,000
Cash, cash equivalents and restricted cash at end of the period	622,879,000	710,621,000	253,459,000
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	622,165,000	710,621,000	253,459,000
Restricted cash included in other current assets and other assets	714,000	0	0
Total cash, cash equivalents and restricted cash	622,879,000	710,621,000	253,459,000
Supplemental disclosures:
Cash paid for interest	0	114,000	2,427,000
Cash paid for income taxes, net of refunds	7,453,000	4,146,000	7,369,000
Noncash investing and financing activities:
Cash not yet paid for capital expenditures	1,047,000	1,082,000	2,020,000
Cash not yet paid for business and asset acquisitions - holdback	$ 4,833,000	$ 850,000	$ 1,017,000