Note 8 - Taxes on Income (Tax Benefits) (Detail) - Net Deferred Taxes (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Deferred income tax assets:
Foreign tax credit carryforwards	$ 483	$ 526
Net operating loss carryforwards	14,366	12,463
Accrued expenses	11,015	10,259
Other	8,563	4,064
Total gross deferred income tax assets	34,427	27,312
Less valuation allowance	(4,691)	(5,083)
Net deferred income tax assets	29,736	22,229
Deferred income tax liabilities:
Property, plant and equipment	(16,127)	(14,256)
Intangible assets	(27,088)	(18,097)
Undistributed foreign earnings	(7,051)	(7,051)
Other	(11,721)	(7,364)
Total deferred income tax liabilities	(61,987)	(46,768)
Net deferred income tax assets (liabilities)	(32,251)	(24,539)
Current deferred income tax assets, net	3,728	4,787
Current deferred income tax liabilities, net	(3,230)	(1,111)
Noncurrent deferred income tax assets, net	5,418	4,115
Noncurrent deferred income tax liabilities, net	$ (38,167)	$ (32,330)