Discontinued Operations - Components of Cash Flows of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net cash (used) by operating activities	$ 0	$ (1,301)	$ (2,164)
Net cash provided by (used in) by investing activities	0	0	0
Net cash provided by (used in) by financing activities	0	0	0
Effect of exchange rate changes on cash	0	0	1,771
Net decrease in cash and cash equivalents	0	(1,301)	(393)
Cash balance of discontinued operations at beginning of period	0	1,301	1,694
Cash balance of discontinued operations at end of period	$ 0	$ 0	$ 1,301