Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Revenue Recognition (Details Textual)

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Note 4 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Revenues, Total $ 24,834 $ 25,999 $ 49,297 $ 47,552
Direct Payer Rentals [Member]        
Revenues, Total 8,354 7,940 16,440 14,800
Direct Payer Rentals [Member] | ITS Segment [Member]        
Revenues, Total 3,200 2,800 6,300 5,700
Direct Payer Rentals [Member] | DME Services Segment [Member]        
Revenues, Total $ 5,200 $ 5,100 $ 10,100 $ 9,100