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Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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Fair Value Measurement (Detail) - (Table) (USD $)																																	9 Months Ended
Fair Value Measurement (Detail) - (Table) (USD $)	Sep. 30, 2013 Fair Value [Member]	Dec. 31, 2012 Fair Value [Member]	Sep. 30, 2013 Fair Value [Member] Note receivable – related party [Member]	Dec. 31, 2012 Fair Value [Member] Note receivable – related party [Member]	Sep. 30, 2013 Fair Value [Member] Forward contracts [Member]	Dec. 31, 2012 Fair Value [Member] Forward contracts [Member]	Sep. 30, 2013 Fair Value [Member] Note receivable – Seller of SM Canada [Member]	Dec. 31, 2012 Fair Value [Member] Note receivable – Seller of SM Canada [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 1 [Member] Note receivable – related party [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Note receivable – related party [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 1 [Member] Forward contracts [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Forward contracts [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 1 [Member] Note receivable – Seller of SM Canada [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member] Note receivable – Seller of SM Canada [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 2 [Member] Note receivable – related party [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Note receivable – related party [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 2 [Member] Forward contracts [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Forward contracts [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 2 [Member] Note receivable – Seller of SM Canada [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member] Note receivable – Seller of SM Canada [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 3 [Member] Note receivable – related party [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Note receivable – related party [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 3 [Member] Forward contracts [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Forward contracts [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 3 [Member] Note receivable – Seller of SM Canada [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Note receivable – Seller of SM Canada [Member]	Sep. 30, 2013 Cejon Acquisition [Member]	Sep. 30, 2013 Big Buddha [Member]
Business Acquisition, Contingent Consideration, Actual Cash Payment																																	$ 5,139	$ 1,813
Assets:
Cash Equivalents	825,000	5,707,000							825,000	5,707,000							0	0							0	0
Current marketable securities – available for sale	19,848,000	16,285,000							19,848,000	16,285,000							0	0							0	0
Notes Receivable, Fair Value Disclosure			3,581,000	3,581,000	166,000	161,000	3,085,000	3,085,000			0	0	0	0	0	0			0	0	166,000	161,000	0	0			3,581,000	3,581,000	0	0	3,085,000	3,085,000
Long-term marketable securities – available for sale	92,431,000	81,202,000							92,431,000	81,202,000							0	0							0	0
Total assets	119,936,000	110,021,000							113,104,000	103,194,000							166,000	161,000							6,666,000	6,666,000
Liabilities:
Contingent consideration	39,699,000	41,960,000							0	0							0	0							39,699,000	41,960,000
Total liabilities	$ 39,699,000	$ 41,960,000							$ 0	$ 0							$ 0	$ 0							$ 39,699,000	$ 41,960,000