Note 8 - Inventories (Tables)

6 Months Ended

Jun. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(In thousands)	June 30, 2014		December 31, 2014
Raw materials:
Drilling fluids	$	157,846	$	153,901
Mats		833		790
Total raw materials		158,679		154,691
Blended drilling fluids components		39,518		34,075
Finished goods- mats		932		914
Total	$	199,129	$	189,680