Note 2 - Acquisitions	6 Months Ended
Jun. 30, 2019
Notes to Financial Statements
Business Combination Disclosure [Text Block]	2. Acquisitions *Acquisition of Pika* On April 26, 2019, the Company acquired Pika for a purchase price, net of cash acquired, of $49,068. The acquisition purchase price was funded solely through cash on hand. The Company recorded a preliminary purchase price allocation during the second quarter of 2019 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $55,986 of intangible assets, including $23,204 of goodwill recorded in the Domestic segment, as of the acquisition date. The goodwill ascribed to the acquisition is not deductible for tax purposes. The accompanying condensed consolidated financial statements include the results of Pika from the date of acquisition through June 30, 2019. *Acquisition of* *Neurio* On March 12, 2019, the Company acquired Neurio for a purchase price of $59,071, net of cash acquired and inclusive of estimated deferred payments of $8,047. The acquisition purchase price was funded solely through cash on hand. The Company recorded a preliminary purchase price allocation in the second quarter of 2019 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $58,763 of intangible assets, including $24,263 of goodwill recorded in the Domestic segment, as of the acquisition date. Substantially all of the goodwill ascribed to this acquisition is deductible for tax purposes. The accompanying condensed consolidated financial statements include the results of Neurio from the date of acquisition through June 30, 2019. *Acquisition of Selmec* On June 1, 2018, the Company acquired Selmec for a purchase price of $79,972, net of cash acquired and inclusive of estimated earnout payments of $14,902. The acquisition purchase price was funded solely through cash on hand. The Company finalized the Selmec purchase price allocation during the second quarter of 2019 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $79,826 of intangible assets, including approximately $46,196 of goodwill recorded in the International segment, as of the acquisition date. The goodwill adjustment recorded during the second quarter of 2019 was not material to the condensed consolidated financial statements. The goodwill ascribed to the acquisition is not deductible for tax purposes. The accompanying condensed consolidated financial statements include the results of Selmec from the date of acquisition through June 30, 2019. Overall, the net sales contribution from all non-annualized acquisitions to the three and six month periods ended June 30, 2019 was $12,342 and $27,205, respectively.

Note 2 - Acquisitions

6 Months Ended

Jun. 30, 2019

Business Combination Disclosure [Text Block]

2. Acquisitions

Acquisition of Pika

On April 26, 2019, the Company acquired Pika for a purchase price, net of cash acquired, of $49,068. The acquisition purchase price was funded solely through cash on hand.

The Company recorded a preliminary purchase price allocation during the second quarter of 2019 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $55,986 of intangible assets, including $23,204 of goodwill recorded in the Domestic segment, as of the acquisition date. The goodwill ascribed to the acquisition is not deductible for tax purposes. The accompanying condensed consolidated financial statements include the results of Pika from the date of acquisition through June 30, 2019.

Acquisition of Neurio

On March 12, 2019, the Company acquired Neurio for a purchase price of $59,071, net of cash acquired and inclusive of estimated deferred payments of $8,047. The acquisition purchase price was funded solely through cash on hand.

The Company recorded a preliminary purchase price allocation in the second quarter of 2019 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $58,763 of intangible assets, including $24,263 of goodwill recorded in the Domestic segment, as of the acquisition date. Substantially all of the goodwill ascribed to this acquisition is deductible for tax purposes. The accompanying condensed consolidated financial statements include the results of Neurio from the date of acquisition through June 30, 2019.

Acquisition of Selmec

On June 1, 2018, the Company acquired Selmec for a purchase price of $79,972, net of cash acquired and inclusive of estimated earnout payments of $14,902. The acquisition purchase price was funded solely through cash on hand.

The Company finalized the Selmec purchase price allocation during the second quarter of 2019 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $79,826 of intangible assets, including approximately $46,196 of goodwill recorded in the International segment, as of the acquisition date. The goodwill adjustment recorded during the second quarter of 2019 was not material to the condensed consolidated financial statements. The goodwill ascribed to the acquisition is not deductible for tax purposes. The accompanying condensed consolidated financial statements include the results of Selmec from the date of acquisition through June 30, 2019.

Overall, the net sales contribution from all non-annualized acquisitions to the three and six month periods ended June 30, 2019 was $12,342 and $27,205, respectively.