Note L - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	2012			2011			2010
Cost of goods sold	$	26		$	(124	)	$	146
Selling, general and administrative expenses		1,005			975			1,592
Pre-tax stock-based compensation expenses		1,031			851			1,738
Income tax (benefit)/expense		(3	)		67			(114	)
Total stock-based compensation expenses	$	1,028		$	918		$	1,624

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

	2012			2011			2010
Expected life (years)		6			6			6
Risk-free interest rate		1.1	%		1.4	%		2.4	%
Expected volatility		53.9	%		51.6	%		46.0	%
Expected dividend yield		0.0	%		0.0	%		0.0	%

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

	Shares			Weighted average exercise price		Weighted  average remaining contractual life (in years)		Aggregate  intrinsic  value
Options outstanding January 1, 2010		2,772,065		$	8.98
Granted		318,300			11.21
Exercised		(241,999	)		5.15
Canceled		(89,471	)		9.95
Options outstanding December 31, 2010		2,758,895			9.54
Granted		1,178,600			4.41
Exercised		(220,498	)		4.82
Canceled		(488,068	)		9.79
Options outstanding December 31, 2011		3,228,929			7.95
Granted		949,500			3.34
Exercised		(7,334	)		0.73
Canceled		(490,759	)		8.10
Options outstanding December 31, 2012		3,680,336		$	6.76		6.92	$	457
Options exercisable December 31, 2010		1,297,454
Options exercisable December 31, 2011		1,176,050
Options exercisable December 31, 2012		1,191,774		$	10.50		3.91	$	24

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

	2012		2011		2010
Weighted-average grant date fair value	$	1.73	$	2.18	$	5.35

Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block]

	2012		2011		2010
Proceeds from stock options exercised	$	5	$	1,062	$	1,247
Intrinsic value of stock options exercised	$	19	$	991	$	1,681