Note 13 - Income Taxes - Earnings Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2021	[1]	Sep. 30, 2021	[2]	Jun. 30, 2021	[3]	Mar. 31, 2021	[4]	Dec. 31, 2020	[5]	Sep. 30, 2020	[6]	Jun. 30, 2020	[7]	Mar. 31, 2020	[8]	Dec. 31, 2021	Dec. 31, 2020
Domestic																	$ 7,372	$ (2,017)
Foreign																	1,030	786
Earnings (loss) before income tax expense (benefit)	$ 236		$ 2,532		$ 3,056		$ 2,578		$ (454)		$ 433		$ 183		$ (1,393)		$ 8,402	$ (1,231)

[1] The quarter ended December 31, 2021 includes a recovery of $17 of restructuring and other charges which are discussed in Note 5.

[2] The quarter ended September 30, 2021 includes $51 of restructuring and other charges which are discussed in Note 5.

[3] The quarter ended June 30, 2021 includes $197 of restructuring and other charges which are discussed in Note 5.

[4] The quarter ended March 31, 2021 includes $55 of restructuring and other charges which are discussed in Note 5.

[5] The quarter ended December 31, 2020 includes $1,078 of restructuring and other charges which are discussed in Note 5.

[6] The quarter ended September 30, 2020 includes $161 of restructuring and other charges which are discussed in Note 5.

[7] The quarter ended June 30, 2020 includes $38 of restructuring and other charges which are discussed in Note 5.

[8] The quarter ended March 31, 2020 includes $8 of restructuring and other charges which are discussed in Note 5.