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Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stockholders' Equity Attributable to Parent	$ (279,003)	$ (270,489)	$ (221,778)
Accumulated Translation Adjustment [Member]
Stockholders' Equity Attributable to Parent	1,645	985	1,379
Net current period other comprehensive gain (loss)	660	(394)
Reclassification of accumulated other comprehensive income (loss)	0	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Stockholders' Equity Attributable to Parent	150	100	83
Net current period other comprehensive gain (loss)	50	17
Reclassification of accumulated other comprehensive income (loss)	0	0
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity Attributable to Parent	1,795	1,085	1,462	930
Net current period other comprehensive gain (loss)	710	(377)
Reclassification of accumulated other comprehensive income (loss)	$ 0	$ 0

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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