(4) Investment in Savoy (Details) - Condensed Statement of Operations (Equity Investment in Savoy, USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Equity Investment in Savoy
(4) Investment in Savoy (Details) - Condensed Statement of Operations [Line Items]
Revenue	$ 29,444	$ 24,585
Expenses	(19,471)	(17,931)
Net income	$ 9,973	$ 6,654

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration