Discontinued Operations (Schedule of Discontinued Operations) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Selling, general and administrative expenses	$ 5,143,306	$ 5,936,517	$ 10,166,805	$ 11,519,208
Other (expense)/income, net	3,212	4,319	15,359	26,660
Nonoperating Income (Expense), Total	(49,046)	(86,086)	(88,603)	(154,459)
Loss from discontinued operations after income taxes		(200,654)		(600,822)
Superior Galleries [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		1,148,552		3,168,379
Cost of sales		1,034,479		2,860,918
Selling, general and administrative expenses		200,336		399,271
Depreciation and amortization		11,866		244,111
Total		1,246,681		3,504,300
Operating loss		(98,129)		(335,921)
Other (expense)/income, net		(100,158)		(259,539)
Interest expense		(2,367)		(5,362)
Nonoperating Income (Expense), Total		(102,525)		(264,901)
Loss from discontinued operations before income taxes		(200,654)		(600,822)
Income tax expense
Loss from discontinued operations after income taxes		$ (200,654)		$ (600,822)