Note 12 - Accumulated Other Comprehensive Loss - Summary of Reclassifications from Accumulated Other Comprehensive Loss to Net Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Amortization of defined benefit plan pension items: (1)
Amortization of loss (2)	[1],[2]	$ 225	$ 615
Income tax effect	[2]	(64)	(252)
After tax	[2]	161	363
Amortization of (gain) loss on interest rate swap: (3)
Reclassification to interest expense	[3]	(444)	104
Income tax effect	[3]	128	(43)
After tax	[3]	(316)	61
Total reclassifications net of income tax		$ (155)	$ 424

[1] Included in "Other income (expense), net" on the Company's Consolidated Statements of Comprehensive (Loss) Income.

[2] See Note 13 "Retirement Plans" for additional information regarding the Company's pension plans.

[3] See Note 7 "Fair Value Measurements" for additional information regarding the Company's interest rate swaps.