Note 18 - Acquisition of Businesses (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended	12 Months Ended
	May 02, 2018	Dec. 01, 2017	Aug. 21, 2017	Mar. 08, 2016	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2020
Amortization of Intangible Assets, Total						$ 3,800	$ 3,800	$ 2,400
Business Combination, Contingent Consideration, Liability, Current						1,905	941
Goodwill, Ending Balance						$ 36,292	33,961
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life						12 years 255 days
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life						5 years 146 days
CID Resources [Member]
Payments to Acquire Businesses, Gross	$ 84,430
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	150,094
Working Capital Target Amount	$ 2,500
Goodwill, Purchase Accounting Adjustments					$ 2,400
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory					(1,800)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable					$ 600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	41,020
Amortization of Intangible Assets, Total						$ 1,900	1,300
Business Combination, Acquisition Related Costs							2,100
Business Acquisition, Pro Forma Revenue							22,300	65,300
Business Acquisition, Pro Forma Net Income (Loss)							$ 2,700	$ 400
Business Acquisition, Pro Forma Earnings Per Share, Basic							$ 0.17	$ 0.02
Business Combination, Consideration Transferred, Total	90,714
Goodwill, Ending Balance	20,323
CID Resources [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	14,200
CID Resources [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 26,000
Finite-Lived Intangible Asset, Useful Life	15 years
CID Resources [Member] | Noncompete Agreements [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 800
Finite-Lived Intangible Asset, Useful Life	5 years
BAMKO [Member]
Payments to Acquire Businesses, Gross				$ 15,200
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares				324,000
Business Acquisition, Equity Interested Issued, Vesting Period				5 years
Business Combination, Liabilities Arising From Contingencies, Earn Out Liability, Before Discount				$ 5,500
Business Combination, Contingent Consideration, Liability, Total						2,800
Business Combination, Contingent Consideration, Liability, Current						1,100
Public Identity [Member]
Payments to Acquire Businesses, Gross			$ 800
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			54,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total			$ 1,700
Business Acquisition, Equity Interested Issued, Vesting Period			3 years
Business Combination, Contingent Consideration, Liability, Total						100
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 400
Business Combination, Consideration Transferred, Total			2,300
Goodwill, Ending Balance			$ 600
Tangerine [Member]
Payments to Acquire Businesses, Gross		$ 7,200
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		83,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable						500	$ 600	$ 100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 6,495
Business Combination, Acquisition Related Costs								200
Business Acquisition, Pro Forma Revenue								35,100
Business Acquisition, Pro Forma Net Income (Loss)								$ 100
Business Acquisition, Pro Forma Earnings Per Share, Basic								$ 0.01
Business Acquisition, Equity Interested Issued, Vesting Period		4 years
Business Combination, Liabilities Arising From Contingencies, Earn Out Liability, Before Discount		$ 5,500
Business Combination, Contingent Consideration, Liability, Total						$ 2,600
Business Combination, Consideration Transferred, Total		12,088
Goodwill, Ending Balance		4,169
Tangerine [Member] | Forecast [Member]
Business Combination, Contingent Consideration, Liability, Current									$ 800
Tangerine [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		3,200
Tangerine [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 3,100
Finite-Lived Intangible Asset, Useful Life		7 years
Tangerine [Member] | Noncompete Agreements [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 200