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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT [Schedule] Notes to Condensed Financial Information of Registrant (Details) (USD $) In Thousands, unless otherwise specified					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 Parent Company	Dec. 31, 2011 Parent Company	Dec. 31, 2010 Parent Company	Dec. 31, 2012 Restricted Net Assets Parent Company
Condensed Financial Statements, Captions [Line Items]
Stockholders' equity attributable to parent	$ 106,541	$ 107,357	$ 93,278	$ 76,260	$ 106,541	$ 107,357		$ 37,926
Restricted net asset percentage					25.00%
Dividends received from subsidiaries					$ 6,255	$ 4,515	$ 3,123

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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