Note 4 - Restructuring (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Restructuring and Related Costs [Table Text Block]

	Quarter Ended June 30, 2019											Quarter Ended June 30, 2018
	Infrastructure Solutions			Corrosion Protection		Energy Services		Corporate		Total		Infrastructure Solutions		Corrosion Protection		Corporate		Total
Severance and benefit related costs	$	551		$	1,575	$	6	$	—	$	2,132	$	1,001	$	196	$	—	$	1,197
Contract termination costs		(92	)		790		—		—		698		309		—		—		309
Relocation and other moving costs		—			144		—		—		144		34		—		—		34
Other restructuring costs (1)		1,696			940		—		906		3,542		1,186		139		48		1,373
Total pre-tax restructuring charges	$	2,155		$	3,449	$	6	$	906	$	6,516	$	2,530	$	335	$	48	$	2,913

	Six Months Ended June 30, 2019										Six Months Ended June 30, 2018
	Infrastructure Solutions		Corrosion Protection		Energy Services		Corporate		Total		Infrastructure Solutions		Corrosion Protection		Corporate		Total
Severance and benefit related costs	$	833	$	1,745	$	40	$	9	$	2,627	$	1,781	$	317	$	170	$	2,268
Contract termination costs		333		807		—		98		1,238		837		—		150		987
Relocation and other moving costs		51		144		—		—		195		74		—		—		74
Other restructuring costs (1)		3,440		729		—		1,153		5,322		3,054		1,483		291		4,828
Total pre-tax restructuring charges	$	4,657	$	3,425	$	40	$	1,260	$	9,382	$	5,746	$	1,800	$	611	$	8,157

	Quarter Ended June 30, 2019											Quarter Ended June 30, 2018
	Infrastructure Solutions			Corrosion Protection		Energy Services		Corporate		Total (1)		Infrastructure Solutions		Corrosion Protection		Corporate		Total (2)
Cost of revenues	$	(67	)	$	463	$	—	$	—	$	396	$	—	$	—	$	—	$	—
Operating expenses		976			331		—		898		2,205		1,186		139		48		1,373
Restructuring and related charges		459			2,509		6		—		2,974		1,344		196		—		1,540
Other expense		787			146		—		8		941		—		—		—		—
Total pre-tax restructuring charges	$	2,155		$	3,449	$	6	$	906	$	6,516	$	2,530	$	335	$	48	$	2,913

	Six Months Ended June 30, 2019												Six Months Ended June 30, 2018
	Infrastructure Solutions			Corrosion Protection			Energy Services		Corporate		Total (1)		Infrastructure Solutions		Corrosion Protection		Corporate		Total (2)
Cost of revenues	$	(92	)	$	562		$	—	$	—	$	470	$	—	$	—	$	—	$	—
Operating expenses		2,322			268			—		1,145		3,735		3,054		1,483		291		4,828
Restructuring and related charges		1,217			2,696			40		107		4,060		2,692		317		320		3,329
Other expense		1,210			(101	)		—		8		1,117		—		—		—		—
Total pre-tax restructuring charges	$	4,657		$	3,425		$	40	$	1,260	$	9,382	$	5,746	$	1,800	$	611	$	8,157

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

								Utilized in 2019
	Reserves at December 31, 2018		2019 Charge to Income		Foreign Currency Translation			Cash(1)		Non-Cash		Reserves at June 30, 2019
Severance and benefit related costs	$	1,742	$	2,627	$	(10	)	$	1,860	$	—	$	2,499
Contract termination costs		359		1,238		(13	)		606		—		978
Relocation and other moving costs		—		195		(1	)		26		—		168
Other restructuring costs		311		5,322		(3	)		3,450		1,409		771
Total pre-tax restructuring charges	$	2,412	$	9,382	$	(27	)	$	5,942	$	1,409	$	4,416

								Utilized in 2018
	Reserves at December 31, 2017		2018 Charge to Income		Foreign Currency Translation			Cash(1)		Non-Cash		Reserves at June 30, 2018
Severance and benefit related costs	$	3,864	$	2,268	$	(9	)	$	2,993	$	—	$	3,130
Contract termination costs		650		987		(9	)		1,041		—		587
Relocation and other moving costs		—		74		—			74		—		—
Other restructuring costs		675		4,828		—			2,373		2,980		150
Total pre-tax restructuring charges	$	5,189	$	8,157	$	(18	)	$	6,481	$	2,980	$	3,867