Restatement of Condensed Consolidated Balance Sheets (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Goodwill, net	$ 22,256,890	$ 13,046,358
Total assets	95,898,119	36,723,461
Accrued tax payable	525,086	2,096
Deferred tax liability	3,194,628	0
Total liabilities	23,637,277	11,961,028
Accumulated deficit	(75,459,395)	(76,171,822)
Accumulated other comprehnsive income (loss)	1,215,450	(24,336)
Previously Reported
Goodwill, net	18,413,545
Total assets	92,054,774
Accrued tax payable	570,699
Deferred tax liability	0
Total liabilities	20,488,262
Accumulated deficit	(76,124,821)
Accumulated other comprehnsive income (loss)	1,186,546
Adjustment
Goodwill, net	3,843,345
Total assets	3,843,345
Accrued tax payable	(45,613)
Deferred tax liability	3,194,628
Total liabilities	3,149,015
Accumulated deficit	665,426
Accumulated other comprehnsive income (loss)	$ 28,904