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Note 4 - Acquisitions - Preliminary Purchase Consideration (Details) - USD ($) $ in Thousands	Mar. 18, 2019	Sep. 30, 2019	Dec. 31, 2018
Goodwill		$ 110,100	$ 90,054
Ascio Technologies, Inc. [Member]
Goodwill	$ 20,046
Cash	1,437
Prepaid domain registry fees	10,318
Other assets	2,192
Total assets	48,633
Deferred Revenue	(12,509)
Deferred Tax Liabilities	(3,025)
Other liabilities	(3,637)
Total liabilities	(19,171)
Preliminary consideration paid	29,462
Ascio Technologies, Inc. [Member] | Brand [Member]
Finite-Lived Intangibles	2,020
Ascio Technologies, Inc. [Member] | Technology-Based Intangible Assets [Member]
Finite-Lived Intangibles	2,420
Ascio Technologies, Inc. [Member] | Customer Relationships [Member]
Finite-Lived Intangibles	$ 10,200

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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