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Inventory - Schedule of Inventory (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Artifacts	$ 5,446,668	$ 5,743,915
Packaging	87,000	131,641
Merchandise	397,315	485,769
Merchandise reserve	(371,332)	(367,558)
Total inventory	$ 5,559,651	$ 5,993,767

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Artifacts.

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Inventory current and noncurrent net.

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Amount of valuation reserve for inventory.

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Carrying amount as of the balance sheet date of merchandise inventory purchased by a retailer, wholesaler or distributor and held for future sale.

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