Quarterly Financial Data (Unaudited) (Parenthetical) (Detail) (USD $)	3 Months Ended				12 Months Ended				0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Feb. 15, 2013 Clinical Trial Services [Member]
Effect of Fourth Quarter Events [Line Items]
Gain on disposal before taxes									$ 3,968,714
Gain on sale of discontinued operations					3,968,714		0	0	2,055,907
Change in valuation allowance					(48,406,398)	[1],[2]
Impairment of intangibles	6,400,000
Goodwill impairment charge		$ 11,900,000	$ 23,500,000	$ 18,732,000

[1] Related to deferred tax assets on state net operating losses and a particular subsidiary’s state portion of its deferred tax asset that arose from goodwill impairment.

[2] Related to deferred tax assets, Cyprus NOL's, and reversal of deferred tax assets related to the clinical trial services business.