Note 13 - Employee Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Pension benefits								Postretirement benefits
	Three months ended September 30,				Nine months ended September 30,				Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013		2014		2013		2014		2013
Service cost	$	30	$	16	$	62	$	53	$	4	$	3	$	9	$	10
Interest cost		42		33		118		99		10		10		28		29
Expected return on plan assets		(45)		(42)		(131)		(126)
Amortization of net loss												3				11
Amortization of prior service cost (credit)		1		1		4		3		(3)		(1)		(5)		(4)
Recognition of actuarial gain								(41)
Total pension and postretirement benefit expense (credit)	$	28	$	8	$	53	$	(12)	$	11	$	15	$	32	$	46