Note 11 - Acquisition of Businesses (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	May 02, 2018	Dec. 01, 2017	Aug. 21, 2017	Mar. 08, 2016	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Amortization of Intangible Assets, Total					$ 1,000	$ 800
Business Combination, Contingent Consideration, Liability, Current					941		$ 941
Goodwill, Ending Balance					33,955		$ 33,961
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	$ 39,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	41,020
Business Combination, Consideration Transferred, Total	90,714
Goodwill, Ending Balance	17,968
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 Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				$ 11,400
Amortization of Intangible Assets, Total					500
Business Acquisition, Pro Forma Revenue						19,200
Business Acquisition, Pro Forma Net Income (Loss)						$ 2,000
Business Acquisition, Pro Forma Earnings Per Share, Basic						$ 0.13
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					4,100
Business Combination, Contingent Consideration, Liability, Current					900
Business Combination, Consideration Transferred, Total				12,088
BAMKO [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				8,900
BAMKO [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				2,100
BAMKO [Member] | Noncompete Agreements [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				$ 400
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 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, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 6,495
Amortization of Intangible Assets, Total					100
Business Acquisition, Equity Interested Issued, Vesting Period		4 years
Business Combination, Liabilities Arising From Contingencies, Earn Out Liability, Before Discount		$ 3,200
Business Combination, Contingent Consideration, Liability, Total					$ 2,500
Goodwill, Ending Balance		4,169
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
Finite-Lived Intangible Asset, Useful Life		7 years