BUSINESS SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Segment	Mar. 31, 2013 Segment
Segment information
Number of segments	2	3
Net sales	$ 48,039	$ 46,270
Depreciation and amortization	3,611	3,002
Income from operations	2,763	(1,055)
Unallocated amounts:
Corporate expenses	(1,629)	(3,506)
Stock-based compensation	(555)	(1,422)
Other expense	(435)	296
Interest expense	(109)	(172)
Interest income	5	3
Consolidated income (loss) before income taxes	2,224	(928)
Reportable Segments
Segment information
Income from operations	4,947	3,873
NobelClad
Segment information
Net sales	24,564	26,180
Depreciation and amortization	1,732	1,456
Income from operations	1,377	2,444
Oilfield Products
Segment information
Net sales	23,475	20,090
Depreciation and amortization	1,879	1,546
Income from operations	$ 3,570	$ 1,429
Customer Concentration Risk
Unallocated amounts:
Number of customers representing greater than 10% of total net sales	0	0
Segment assets | AMK Technical Services
Segment information
Concentration risk percentage	3.00%
Consolidated sales | AMK Technical Services
Segment information
Concentration risk percentage	4.00%
Segment operating income | AMK Technical Services
Segment information
Concentration risk percentage	2.00%