Note 5 - Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Service cost	$	140		$	130		$	421		$	390
Interest cost		94			88			282			264
Expected return on plan assets		(99	)		(87	)		(297	)		(261	)
Amortization of net loss		62			41			185			123
Amortization of prior service cost		(2	)		(2	)		(6	)		(6	)
	$	195		$	170		$	585		$	510