Note 11 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Share-based Compensation, Activity [Table Text Block]

	2012					2011				2010
	Option Shares			Weighted Average Exercise Price		Option Shares		Weighted Average Exercise Price		Option Shares			Weighted Average Exercise Price
Outstanding at January 1		115,600		$	4.40		103,600	$	4.35		197,700		$	2.23
Granted		12,000			5.27		12,000		4.80		42,600			4.59
Forfeited or expired		-			-		-		-		-			-
Exchanged		-			-		-		-		-			-
Exercised		(6,000	)		3.50		-		-		(136,700	)		1.65
Outstanding at December 31		121,600		$	4.53		115,600	$	4.40		103,600		$	4.35
Exercisable at end of year		121,600		$	4.53		115,600	$	4.40		70,000		$	4.33
Weighted-average fair value of options granted during year	$	0.83				$	1.19			$	1.42

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Options Outstanding						Options Exercisable
Exercise Price Range			Option Shares		Weighted Average Exercise Price		Weighted Average Maturity (Years)		Option Shares		Weighted Average Exercise Price		Weighted Average Maturity (Years)
$2.72	to	$3.90		4,000	$	3.885		1.24		4,000	$	3.885		1.24
$3.91	to	$5.30		117,600		4.553		4.96		117,600		4.553		4.96
				121,600	$	4.53		4.83		121,600	$	4.53		4.83