Components of Income Tax Expense (Benefit) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current
Federal	$ 0	$ 411,767	$ (29,716)
State	540,266	811,760	355,142
Foreign	415,806	1,561,492	632,415
Current Income Tax Expense (Benefit), Total	956,072	2,785,019	957,841
Deferred
Federal	37,821,541	(4,048,064)	444,193
State	5,133,844	(5,251,385)	681,076
Foreign	299,091	364,541	(13,663)
Total	43,254,476	(8,934,908)	1,111,606
Total income tax expense (benefit)	44,210,548	(6,149,889)	2,069,447
Continuing operations	44,210,548	(6,149,889)	2,069,447
Discontinued operations	2,121,941	(9,496,992)	2,063,050
Income tax expense (benefit), continuing operations, discontinued operations, total	$ 46,332,489	$ (15,646,881)	$ 4,132,497