Note 12 - Acquisitions (Details Textual) - USD ($)								2 Months Ended	3 Months Ended		5 Months Ended	8 Months Ended	9 Months Ended	12 Months Ended
	Sep. 01, 2021	May 03, 2021	Oct. 01, 2020	Sep. 30, 2020	Nov. 12, 2019	Aug. 08, 2019	Apr. 01, 2019	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Nov. 11, 2019	Aug. 07, 2019
Goodwill, Ending Balance								$ 33,637,000	$ 224,741,000	$ 58,449,000	$ 33,637,000	$ 224,741,000	$ 33,637,000	$ 224,741,000	$ 58,449,000	$ 33,637,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable														264,718,000	0	0
Payment for Contingent Consideration Liability, Financing Activities														(0)	483,000	(0)
Sexton Acquisition [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	530,502
Business Acquisition, Percentage of Equity Issuable Shares Held in Escrow Accounts for Post Closing Claims	10.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net, Total	$ 6,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Gross Receivables	509,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Uncollectable Receivables	17,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period									198,000
Goodwill, Ending Balance	28,470,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	32,095,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total	39,928,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	$ 7,951,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual									1,800,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual									(1,000,000.0)
Sexton Acquisition [Member] | Common Stock Issued to Acquire Participating Holders [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	477,452
Sexton Acquisition [Member] | Common Stock Deposited Into Escrow [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	53,050
GCI Acquisition [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)		6,636,470
Business Acquisition, Percentage of Equity Issuable Shares Held in Escrow Accounts for Post Closing Claims		9.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Gross Receivables		$ 7,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Uncollectable Receivables		53,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period									$ 607,000
Goodwill, Ending Balance		$ 137,822,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Before Adjustments (in shares)		6,646,870
Business Combination, Stock Reduced During Period, Satisfy Note Receivable (in shares)		10,400
Business Combination, Escrow Shares, Period (Month)		24 months
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		$ 232,741,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total		$ 234,909,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual												39,100,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual												$ (19,600,000)
GCI Acquisition [Member] | One GCI Stockholder [Member]
Business Combination, Stock Reduced During Period, Satisfy Note Receivable (in shares)		10,400
Financing Receivable, after Allowance for Credit Loss, Total		$ 374,000
SciSafe Holdings, Inc [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)			611,683
Goodwill, Ending Balance			$ 24,943,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage			100.00%
Business Acquisition, Share Price (in dollars per share)			$ 29.29
Payments to Acquire Businesses, Gross			$ 15,000,000
Business Acquisition, Amount Held in Escrow			1,500,000
Payments to Acquire Notes Receivable				$ 500,000
Business Combination, Indemnification Assets, Amount as of Acquisition Date			130,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable			17,916,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total			36,526,000
Business Combination, Consideration Transferred, Liabilities Incurred			$ 3,663,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual										1,800,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual										$ (416,000)
SciSafe Holdings, Inc [Member] | Maximum [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)			626,000
CBS Acquisition [Member]
Goodwill, Ending Balance																	$ 2,954,000
Payments to Acquire Businesses, Gross					$ 11,000,000
Business Combination, Consideration Transferred, Excluding Contingent Consideration					15,000,000.0
Business Combination, Acquisition Related Costs					11,000,000.0
Business Combination, Cash Holdback Escrow to Satisfy Indemnification Claims					550,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable					4,000,000.0									0	0	4,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Escrow Holdback					3,000,000.0
Payment for Contingent Consideration Liability, Financing Activities														0	0
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total																	$ 15,856,000
Business Combination, Consideration Transferred, Liabilities Incurred					856,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual								2,100,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual								$ 187,000
CBS Acquisition [Member] | Earning Payments Payable in Each Calendar Year 2020, 2021, 2022, 2023, and 2024 [Member]
Business Combination, Consideration Transferred, Liabilities Incurred					$ 15,000,000.0
SAVSU [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)						1,100,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net, Total						$ 10,100,000								0	0	10,108,000
Goodwill, Ending Balance																		$ 21,037,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage						44.00%
Business Acquisition, Share Price (in dollars per share)						$ 18.12
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable						$ 19,932,000								$ 0	$ 0	$ 19,932,000
Business Combinations, Number of Shares Acquired (in shares)						8,616
Business Acquisition, Percentage of Voting Interests Acquired						55.60%
Business Combination, Step Acquisition, Equity Interest in Acquiree, including Subsequent Acquisition, Percentage, Total						100.00%
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total						$ 35,800,000												$ 35,850,000
Equity Method Investments						5,800,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value						15,900,000
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination, Total						$ 35,800,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual											692,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual											$ (1,700,000)
Astero [Member]
Goodwill, Ending Balance							$ 9,515,000
Payments to Acquire Businesses, Gross							12,521,000
Business Combination, Acquisition Related Costs							8,000,000.0
Payment for Contingent Consideration Liability, Financing Activities							483,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total							13,941,000
Payments to Acquire Businesses, Deferred Cash Payment							4,500,000
Business Combination, Consideration Transferred, Liabilities Incurred							1,491,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount							1,100,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual													1,200,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual													$ (1,500,000)
Astero [Member] | Maximum Potential Earnout Payment for 2019, 2020, and 2021 [Member]
Business Combination, Consideration Transferred, Liabilities Incurred							3,500,000
Astero [Member] | Earnout Payment for Calendar Year 2021 [Member]
Business Combination, Consideration Transferred, Liabilities Incurred							$ 5,000,000.0