Note 5 - Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Service cost	$	135		$	130		$	281		$	260
Interest cost		98			88			188			176
Expected return on plan assets		(98	)		(87	)		(198	)		(174	)
Amortization of net loss		57			41			123			82
Amortization of prior service cost		(2	)		(2	)		(4	)		(4	)
	$	190		$	170		$	390		$	340