Bank Credit Agreements and Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2011

Long-term debt by current and noncurrent [Abstract]

Schedule Of Debt [Table Text Block]

	2011			Outstanding at December 31,
	Lines of Credit	Terms		2011		2010
$	47,173	Unsecured, interest at LIBOR plus margin, due quarterly	$	-	$	-
	10,000	Secured, interest at LIBOR plus margin, due monthly (Revolver)		8,000		-
	10,000	Secured, uncommitted, interest at LIBOR plus margin, due monthly (Uncommitted Facility)		-		-
$	67,173		$	8,000	$	-

Short-term debt– The balances as of December 31, consist of the following

		2011		2010
Convertible Senior Notes:
Convertible senior notes principal amount	$	-	$	134,293
Less: unamortized discount		-		(6,032)
Convertible senior notes net carrying amount	$	-	$	128,261

Long-term debt – The balances as of December 31, consist of the following:

		2011		2010
Notes payable to Taiwan bank, principal amount of TWD 158 million, variable interest (approximately 3.3% and 2.0% as of December 31, 2011 and 2010, respectively), of which TWD 132 million matures on July 6, 2021, and TWD 26 million matures July 6, 2013, secured by land and building.		3,265		3,811
Less: Current portion		(408)		(418)
Long-term debt, net of current portion	$	2,857	$	3,393

Schedule Of Maturities Of Long Term Debt [Table Text Block]

The annual contractual maturities of long-term debt at December 31, 2011 are as follows

2012	408
2013	395
2014	292
2015	298
2016	298
Thereafter	1,574
Total long-term debt	$ 3,265

Schedule of Convertible Senior Notes Liability and Equity Components [Table Text Block]

December 31, 2010
	Liability Component Principal Amount		Liability Component Net Carrying Amount		Liability Component Unamortized Discount		Equity Component Carrying Amount
$	134,293	$	128,261	$	6,032	$	35,515

Schedule of Convertible Senior Notes Interest Expense [Table Text Block]

		2011		2010		2009
Notes contractual interest expense	$	2,267	$	3,077	$	3,576
Amortization of debt discount		6,032		7,656		8,302
Amortization of debt issuance costs		412		549		648
Total	$	8,711	$	11,282	$	12,526