Operating Segments (Segment Information On Depreciation/Amortization And Depletion Expense) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Total depreciation	$ 10,837	$ 8,002	$ 6,578
Poland [Member]
Segment Reporting Information [Line Items]
Total depreciation	2,276	2,123	2,664
Russia [Member]
Segment Reporting Information [Line Items]
Total depreciation	8,187	5,467	3,442
Hungary [Member]
Segment Reporting Information [Line Items]
Total depreciation	361	406	439
Corporate [Member]
Segment Reporting Information [Line Items]
Total depreciation	$ 13	$ 6	$ 33