Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net income (loss)	$ 2,667,000	$ (1,657,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation	2,035,000	718,000
Amortization of intangible assets	3,033,000	1,079,000
Stock-based compensation	5,981,000	3,043,000
Non cash lease expense	737,000	512,000
Loss from equity method investment in SAVSU	0	739,000
Gain on acquisition of SAVSU	0	(10,108,000)
Change in fair value of contingent consideration	1,575,000	50,000
Deferred income tax benefit	(3,297,000)	(1,541,000)
Change in fair value of warrant liability	(3,601,000)	12,835,000
Change in fair value of investments	(1,319,000)	0
Stock issued for services	60,000	0
Loss on disposal of assets held for rent, net	365,000	0
Other	190,000	15,000
Change in operating assets and liabilities
Accounts receivable, trade, net	(1,786,000)	(290,000)
Inventories	(629,000)	(3,777,000)
Prepaid expenses and other current assets	25,000	(704,000)
Accounts payable	(171,000)	768,000
Accrued expenses and other current liabilities	780,000	(327,000)
Other	0	(142,000)
Net cash provided by operating activities	6,645,000	1,213,000
Cash flows from investing activities
Purchase of property and equipment	(1,961,000)	(675,000)
Deposits on property and equipment	(2,672,000)	0
Purchase of assets held for lease	(2,813,000)	(1,655,000)
Deposits on assets held for lease	(362,000)	0
Proceeds from sale of equipment	35,000	0
Net cash used in investing activities	(24,715,000)	(27,018,000)
Cash flows from financing activities
Payments of contingent consideration	(483,000)	0
Proceeds from sale of common stock, net of $6.2 million of costs	100,121,000	0
Proceeds from exercise of common stock options	1,471,000	1,181,000
Proceeds from exercise of warrants	40,000	574,000
Payment of costs related to stock issuance	0	0
Other	(55,000)	(159,000)
Net cash provided by financing activities	102,078,000	1,596,000
Net increase (decrease) in cash, cash equivalents, and restricted cash	84,008,000	(24,209,000)
Cash, cash equivalents, and restricted cash – beginning of year	6,448,000	30,657,000
Cash, cash equivalents, and restricted cash – end of year	90,456,000	6,448,000
Non-cash investing and financing activities
Cashless exercise of warrants reclassed from warrant liability to common stock	33,111,000	0
Equipment acquired under operating leases	8,096,000	0
Reclassification of warrant liabilities to equity upon exercise	110,000	1,749,000
Purchase of property and equipment not yet paid	0	29,000
Bonus Consideration [Member]
Non-cash investing and financing activities
Stock issued	314,000	0
Paycheck Protection Program CARES Act [Member]
Cash flows from financing activities
Proceeds from Loan	2,175,000	0
Payoff of PPP Loan	(2,175,000)	0
Equipment Loans [Member]
Cash flows from financing activities
Proceeds from Loan	984,000	0
Investment in Sexton [Member]
Cash flows from investing activities
Investment	0	(1,500,000)
Investment in iVexSol convertible debt	0
IVexSol Convertible Debt Investment [Member]
Cash flows from investing activities
Investment in iVexSol convertible debt		(1,000,000)
IVexSol Preferred Stock Investment [Member]
Cash flows from investing activities
Investment	(1,000,000)	0
PanTHERA Cryosolutions Investment [Member]
Cash flows from investing activities
Investment	(995,000)	0
SAVSU [Member]
Cash flows from investing activities
Business acquisition net of cash	0	1,251,000
Non-cash investing and financing activities
Stock issued as consideration to acquire business	0	19,932,000
Astero [Member]
Cash flows from investing activities
Business acquisition net of cash	0	(12,439,000)
CBS Acquisition [Member]
Cash flows from investing activities
Business acquisition net of cash	0	(11,000,000)
Non-cash investing and financing activities
Stock issued as consideration to acquire business	0	4,000,000
SciSafe Holdings, Inc [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Change in fair value of contingent consideration	3,300,000
Cash flows from investing activities
Business acquisition net of cash	(14,947,000)	0
Non-cash investing and financing activities
Stock issued as consideration to acquire business	$ 17,916,000	$ 0