Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

A summary of restricted stock unit activity is as follows:

			Weighted
	Number of		Average Grant
	Shares		Date Fair Value
Non-vested stock units as of December 27, 2014		50,000		10.49
Vested but unsettled		(4,500)
Outstanding non-vested restricted stock units as of December 27, 2014		45,500		10.49
Granted		52,450		13.91
Vested		(21,175)		11.65
Forfeited		(875)		11.63
Non-vested stock units as of December 26, 2015		75,900	$	12.52
Granted		47,250		11.13
Vested		(16,003)		12.28
Forfeited		(24,800)		12.05
Non-vested stock units as of December 31, 2016		82,347	$	11.91

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

The following table summarizes option activity for each of the three years ended 2016:

	Incentive Stock Options				Director Stock Options
	Granted		Outstanding		Granted		Outstanding
2016		20,000		57,375		—		15,000
2015		—		172,625		—		15,000
2014		—		284,375		25,000		60,000

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

The fair value of each option grant award is estimated on the grant date using the Black-Scholes-Merton option valuation model using the following assumptions:

	2016			2015		2014
Risk-free interest rates		1.06	%		—		0.68	%
Dividend yields		2.73	%		—		4.23	%
Volatility factors of expected market price of common stock		35.60	%		—		35.86	%
Weighted average expected life of the options		1-5 years			—		1-4 years

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

The following table summarizes stock option transactions for the three years ended 2016:

	2016				2015				2014
			Option				Option				Option
	Shares		Price		Shares		Price		Shares		Price
Outstanding at beginning of year		187,625		$5.28 to $11.86		344,375		$2.56 to $11.86		639,950		$0.64 to $6.07
Issued during year		20,000		$14.39		—		—		25,000		$11.86
Canceled or expired		(39,250)				(500)				(19,000)
Exercised during year		(96,000)		$5.28 to $6.07		(156,250)		$2.56 to $11.86		(301,575)		$0.64 to $6.07
Outstanding at end of year		72,375		$5.28 to $14.39		187,625		$5.28 to $11.86		344,375		$2.56 to $11.86
Exercisable at end of year		41,125				133,250				158,875
Weighted-average fair value of options granted during the year	$	2.52				—			$	3.06

Schedule Of Share Based Compensation Stock Options Outstanding [Table Text Block]

The following table summarizes information about stock options outstanding at December 31, 2016:

		Options Outstanding					Options Exercisable
				Weighted-Average
Range of		Number of		Remaining	Weighted-Average		Number of		Weighted-Average
Exercise Prices		Shares		Contractual Life	Exercise Price		Shares		Exercise Price
$	5.28 - $5.66		12,750	0.3 years	$	5.40		12,750	$	5.40
$	5.85 - $6.06		24,625	1.2 years	$	5.85		13,375	$	5.85
$	11.86		15,000	2.2 years	$	11.86		15,000	$	11.86
$	14.39		20,000	5.2 years	$	14.39		—	$	14.39
			72,375					41,125

Schedule of Nonvested Share Activity [Table Text Block]

During the year ended December 31, 2016, the following activity occurred under the Company’s stock option plan:

			Weighted Average
	Number of		Grant Date Fair
	Options		Value
Nonvested balance, beginning of year		54,375	$	2.60
Granted		20,000	$	2.52
Vested		(38,875)	$	2.76
Forfeited		(4,250)	$	2.21
Nonvested balance, end of year		31,250	$	2.41