Note 5 - Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	82		$	135		$	164		$	281
Interest cost		101			98			202			188
Expected return on plan assets		(107	)		(98	)		(214	)		(198	)
Amortization of net loss		14			57			28			123
Amortization of prior service cost		(2	)		(2	)		(4	)		(4	)
	$	88		$	190		$	176		$	390