Note 10 - Postretirement Medical Benefits (Tables) (Postretirement Medical Benefits [Member])

3 Months Ended

Mar. 31, 2013

Postretirement Medical Benefits [Member]

Schedule of Net Benefit Costs [Table Text Block]

Three months ended March 31, (In thousands)	2013		2012
Service cost	$	157	$	154
Interest cost		138		152
Amortization of transition obligation		-		26
Recognized prior service cost		64		64
Recognized net actuarial loss		-		14
Net periodic benefit cost	$	359	$	410