Note 18 - Acquisition of Businesses (Details Textual) - USD ($)						12 Months Ended
	May 02, 2018	Dec. 01, 2017	Aug. 21, 2017	Mar. 08, 2016	Mar. 01, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Amortization of Intangible Assets, Total						$ 3,800,000	$ 2,400,000	$ 2,300,000
Business Combination, Contingent Consideration, Liability, Current						941,000	3,061,000
Goodwill, Ending Balance						$ 33,961,000	$ 16,032,000
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life						10 years 292 days	8 years 292 days
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life						4 years 36 days	5 years 36 days
CID Resources [Member]
Payments to Acquire Businesses, Gross	$ 84,430,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	150,094
Working Capital Target Amount	$ 39,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	41,020,000
Amortization of Intangible Assets, Total						$ 1,300,000
Business Combination, Acquisition Related Costs						2,100,000
Business Acquisition, Pro Forma Revenue						22,300,000	$ 65,300,000	61,200,000
Business Acquisition, Pro Forma Net Income (Loss)						$ 2,700,000	$ 400,000	$ 300,000
Business Acquisition, Pro Forma Earnings Per Share, Basic						$ 0.17	$ 0.02	$ 0.02
Business Combination, Consideration Transferred, Total	90,714,000
Goodwill, Ending Balance	17,968,000
CID Resources [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	14,200,000
CID Resources [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 26,000,000
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	$ 800,000
Finite-Lived Intangible Asset, Useful Life	5 years
BAMKO [Member]
Payments to Acquire Businesses, Gross				$ 15,200,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares				324,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				$ 11,400,000	$ 11,360,000
Amortization of Intangible Assets, Total						$ 400,000	$ 400,000	$ 300,000
Business Combination, Acquisition Related Costs								1,100,000
Business Acquisition, Pro Forma Revenue								6,600,000
Business Acquisition, Pro Forma Net Income (Loss)								$ 1,100,000
Business Acquisition, Pro Forma Earnings Per Share, Basic								$ 0.08
Business Acquisition, Equity Interested Issued, Vesting Period				5 years
Business Combination, Liabilities Arising From Contingencies, Earn Out Liability, Before Discount				$ 5,500,000
Business Combination, Contingent Consideration, Liability, Total						4,000,000
Business Combination, Contingent Consideration, Liability, Current						900,000
Business Combination, Consideration Transferred, Total				24,924,000
Goodwill, Ending Balance					$ 6,994,000
BAMKO [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				8,900,000
BAMKO [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				2,100,000
Finite-Lived Intangible Asset, Useful Life					7 years
BAMKO [Member] | Noncompete Agreements [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				$ 400,000
Finite-Lived Intangible Asset, Useful Life					5 years 302 days
Public Identity [Member]
Payments to Acquire Businesses, Gross			$ 800,000
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			$ 1,700,000
Business Acquisition, Equity Interested Issued, Vesting Period			3 years
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 400,000
Business Combination, Consideration Transferred, Total			2,300,000
Goodwill, Ending Balance			$ 600,000
Tangerine [Member]
Payments to Acquire Businesses, Gross		$ 7,200,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		83,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 6,495,000
Amortization of Intangible Assets, Total						600,000	100,000
Business Combination, Acquisition Related Costs							200,000
Business Acquisition, Pro Forma Revenue							35,100,000	$ 43,100,000
Business Acquisition, Pro Forma Net Income (Loss)							$ 100,000	$ (2,400,000)
Business Acquisition, Pro Forma Earnings Per Share, Basic							$ 0.01	$ (0.17)
Business Acquisition, Equity Interested Issued, Vesting Period		4 years
Business Combination, Liabilities Arising From Contingencies, Earn Out Liability, Before Discount		$ 5,500,000
Business Combination, Contingent Consideration, Liability, Total						$ 2,400,000
Business Combination, Consideration Transferred, Total		12,088,000
Goodwill, Ending Balance		4,169,000
Tangerine [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		3,200,000
Tangerine [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 3,100,000
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		$ 200,000
Finite-Lived Intangible Asset, Useful Life		7 years