Note 3 - Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(In thousands)		2013		2012
Raw materials:
Drilling fluids	$	153,901	$	174,365
Mats		790		754
Total raw materials		154,691		175,119
Blended drilling fluids components		34,075		34,215
Finished goods- mats		914		400
Total	$	189,680	$	209,734