Note 7 - Inventories (Tables)

9 Months Ended

Sep. 30, 2015

Notes Tables

Schedule of Inventory, Current [Table Text Block]

(In thousands)	September 30, 2015		December 31, 2014
Raw materials:
Drilling fluids	$	138,729	$	152,076
Mats		863		1,531
Total raw materials		139,592		153,607
Blended drilling fluids components		31,789		40,971
Finished goods - mats		5,447		1,978
Total	$	176,828	$	196,556