Note 13 - Reserves (Tables)

12 Months Ended

Dec. 31, 2014

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

Description	Balance at Beginning of Year		Increase		Decrease			Balance at End of Year
(in thousands)
Allowance for Doubtful Accounts
2014	$	163	$	31	$	-		$	194
2013	$	262	$	92	$	(191	)	$	163

Description	Balance at Beginning of Year		Increase		Decrease			Balance at End of Year
(in thousands)
Reserve for Environmental Liabilities
2014	$	165			$	(23	)	$	142
2013	$	675	$	41	$	(551	)	$	165