Reconciliation of Income Tax Computed At U. S. Federal Statutory Rate to Income Tax (Benefit) Expense (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Tax at U.S. statutory rate	$ (3,513,812)	$ (9,413,200)	$ 1,266,166
State taxes, net of federal benefit	(190,656)	(1,226,475)	(64,608)
Non-deductible meals and entertainment	449,780	961,933	290,280
Foreign tax expense	554,314	(221,897)	(162,448)
Valuation allowances	48,556,357	(43,657)	367,068
Uncertain tax positions	(257,488)	647,720	174,045
Deferred tax rate differential	312	150,583	(107,057)
Tax Reconciliation Deferred Tax Writeoffs	221,028	0	301,765
Audit settlements	160,026	0	(391,822)
Tax on unrepatriated earnings	(1,464,728)	2,004,596	0
Tax on repatriated earnings	0	519,072	0
Tax true ups and other	(304,585)	471,436	396,058
Total income tax expense (benefit)	$ 44,210,548	$ (6,149,889)	$ 2,069,447