Note 2 - REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Percent of revenues	100.00%	100.00%	100.00%	100.00%
Transferred over Time [Member]
Percent of revenues	74.00%	57.00%	72.00%	54.00%
Transferred at Point in Time [Member]
Percent of revenues	26.00%	43.00%	28.00%	46.00%