Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following:



(Dollars in thousands)	December 31, 2012		December 31, 2011

Raw materials	$	29,064	$	30,513
Work-in-process	13,154		14,664
Finished goods	30,960		32,758
Total Inventory	$	73,178	$	77,935

Property, Plant and Equipment, Estimated Useful Lives [Table Text Block]

For financial reporting purposes, provisions for depreciation are calculated on a straight‑line basis over the following estimated useful lives of the underlying assets: YearsBuildings and improvements10-15Machinery and equipment5-15Office equipment3-10

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

The following table sets forth the computation of basic and diluted earnings per share:



(In thousands, except per share amounts)	2012		2011		2010
Numerator:
Net income (loss)	$	69,134	$	44,250	$	38,551
Denominator:
Denominator for basic earnings per share -
Weighted-average shares	16,426,209		16,035,882		15,800,913
Effect of dilutive stock options	564,949		701,829		204,749
Denominator for diluted earnings per share - Adjusted weighted-average shares and assumed conversions	16,991,158		16,737,711		16,005,662
Basic income (loss) per share:	$	4.21	$	2.76	$	2.44
Diluted income (loss) per share:	4.07		2.64		2.41

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]



	2012	2011	2010
Anti-dilutive shares excluded	774,878	879,604	1,407,865