Income taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income taxes

Schedule of income (loss) before provision (benefit) for income taxes

	Year Ended December 31,
(US$ in thousands)	2011		2010		2009
U.S.	$	18,762	$	57,849	$	28,542
Non-U.S.	1,941		14,549		11,479
	$	20,703	$	72,398	$	40,021

Schedule of provision for (benefit from) income taxes

	Year Ended December 31,
(US$ in thousands)	2011			2010			2009
U.S.
Current	$	17,351		$	23,208		$	17,929
Deferred	(169		)	(1,533		)	(6,698		)
Non-U.S.
Current	3,489			4,804			2,029
Deferred	1,105			1,711			2,289
Total tax expense	$	21,776		$	28,190		$	15,549

Schedule of tax effects of significant temporary differences comprising deferred tax assets and liabilities

(US$ in thousands)	2011			2010
Patents, trademarks, other intangible assets and goodwill	$	(5,144	)	$	(6,048	)
Property, plant and equipment	(9,767		)	(6,672		)
Withholding taxes	(9,777		)	(8,102		)
Inventories and related reserves	11,920			11,576
Accrued compensation	6,833			15,484
Allowance for doubtful accounts	4,278			4,163
Interest	16,123			12,471
Net operating loss carryforwards	20,161			21,790
Other, net	1,241			1,856
Valuation allowance	(19,116		)	(21,023		)
Net deferred tax asset	$	16,752		$	25,495

Schedule of effective income tax rate reconciliation

(US$ in thousands, except percentages)	2011					2010					2009
	Amount			Percent		Amount			Percent		Amount			Percent
Statutory U.S. federal income tax rate	$	7,246		35	%	$	25,339		35	%	$	14,007		35	%
State taxes, net	1,682			8.1	%	2,903			4.0	%	1,574			3.9	%
Foreign rate differential	1,489			7.2	%	(1,299		)	(1.8	)%	(1,401		)	(3.5	)%
Valuation allowance—foreign losses	4,418			21.3	%	3,874			5.4	%	2,861			7.2	%
Italy step-up amortization	(2,421		)	(11.7	)%	(2,607		)	(3.6	)%	(2,573		)	(6.4	)%
Domestic manufacturing deduction	(1,416		)	(6.8	)%	(1,944		)	(2.7	)%	(839		)	(2.1	)%
Settlement of U.S. Government resolutions	9,745			47.1	%	—			0.0	%	—			0.0	%
Other items, net	1,033			5.0	%	1,924			2.6	%	1,920			4.8	%
Income tax expense/effective rate	$	21,776		105.2	%	$	28,190		38.9	%	$	15,549		38.9	%

Schedule of gross unrecognized tax benefits (excluding interest)

(US$ in thousands)	2011			2010
Balance as of January 1,	$	569		$	442
Additions for current year tax positions	162			70
Decreases (increases) for prior year tax positions	(17		)	57
Expiration of statutes	(28		)	—
Balance as of December 31,	$	686		$	569