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Note 5 - Business Combinations (Tables) - Rapid [Member] | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
(in thousands) |  |  |  |
Assets acquired: |  |  |  |
Current assets |  | $ | 6,720 |
Goodwill |  |  | 99,836 |
Other intangible assets |  |  | 8,700 |
Other long-term assets |  |  | 8,855 |
Total assets acquired |  |  | 124,111 |
Liabilities assumed: |  |  |  |
Current liabilities |  |  | 2,067 |
Other long-term liabilities |  |  | 85 |
Total liabilities assumed |  |  | 2,152 |
Net assets acquired |  | $ | 121,959 |
Cash paid |  | $ | 115,378 |
Cash acquired |  |  | (4,755 | )
Net cash consideration |  |  | 110,623 |
Equity portion of purchase price |  |  | 11,336 |
Total purchase consideration |  | $ | 121,959 |
Business Acquisition, Pro Forma Information [Table Text Block] |
|  | Year Ended December 31, |
(in thousands) |  | 2017 |  |  | 2016 |
|  | (unaudited) |
Revenue |  | $ | 386,677 |  |  | $ | 336,634 |
Net income |  |  | 55,070 |  |  |  | 41,805 |

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