Note 11 - Acquisition of Businesses (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 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 | | | | | |