Impairment of Inventory and Long-Lived Assets for Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of pre-tax impairment charges

The Company recorded impairment charges during the three months ended March 31, 2016, as follows (in thousands):

Drilling Technologies:
Inventories	$	12,653
Long-lived assets:
Property and equipment	14,642
Intangible assets other than goodwill	9,227
Production Technologies:
Inventories	3,913
Total impairment	$	40,435