Consolidated Statement Of Stockholder's Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income [Member]
Balance at Dec. 31, 2011		$ 0	$ 398,011	$ (309,185)	$ 21,014
Balance, shares at Dec. 31, 2011		100
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			761
Net income	37,050			37,050
Foreign currency translation adjustments	2,969				2,969
Unrealized losses on securities held as available for sale, net of tax	(32)				(32)
Reclassification adjustment for realized gains on securities held as available for sale included in earnings, net of tax	(230)				(230)
Balance at Dec. 31, 2012		0	398,772	(272,135)	23,721
Balance, shares at Dec. 31, 2012		100
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			869
Net income	113,681			113,681
Foreign currency translation adjustments	(9,952)				(9,952)
Unrealized losses on securities held as available for sale, net of tax	0
Reclassification adjustment for realized gains on securities held as available for sale included in earnings, net of tax	0
Balance at Dec. 31, 2013	254,956	0	399,641	(158,454)	13,769
Balance, shares at Dec. 31, 2013	100	100
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			536
Net income	9,678			9,678
Foreign currency translation adjustments	(12,081)				(12,081)
Unrealized losses on securities held as available for sale, net of tax	0
Reclassification adjustment for realized gains on securities held as available for sale included in earnings, net of tax	0
Balance at Dec. 31, 2014	$ 253,089	$ 0	$ 400,177	$ (148,776)	$ 1,688
Balance, shares at Dec. 31, 2014	100	100