Segment Information on Equity in Net Income Loss (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Total equity in the net income of investees accounted for by the equity method	$ 0	$ (7,946)	$ 13,386
Poland
Segment Reporting Information [Line Items]
Total equity in the net income of investees accounted for by the equity method	0	0	0
Russia
Segment Reporting Information [Line Items]
Total equity in the net income of investees accounted for by the equity method	0	(7,946)	13,386
Hungary
Segment Reporting Information [Line Items]
Total equity in the net income of investees accounted for by the equity method	$ 0	$ 0	$ 0