Goodwill and Indefinite-Lived Intangible Assets - Additional Information (Detail)

Goodwill and Indefinite-Lived Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013 USD ($) Intangible_Assets	Dec. 31, 2012 USD ($) Intangible_Assets	Oct. 01, 2013	Oct. 01, 2012	Jan. 17, 2012 USD ($)
Schedule Of Goodwill And Intangible Assets [Line Items]
Carrying value of indefinite-lived intangible asset	$ 10,318,001	$ 10,112,141
Impairment of indefinite-lived intangible asset	0	$ 0
Onco Hist [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Fair value of indefinite-lived intangible asset	10,559,820
Carrying value of indefinite-lived intangible asset	10,318,001
Foreign currency impact on indefinite-lived intangible asset	$ 205,860
Onco Hist [Member] \| Milestone Income [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Change in fair value of indefinite-lived intangible asset, percentage	5.00%
Impairment of indefinite-lived intangible asset	$ 545,000
Onco Hist [Member] \| Discount Rate [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Change in fair value of indefinite-lived intangible asset, percentage	1.00%
Impairment of indefinite-lived intangible asset	$ 405,000
Indefinitelived Intangible Assets [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Percentage of fair value in excess of carrying value			1.00%	87.00%
Goodwill [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Percentage of fair value in excess of carrying value			104.00%	58.00%
Symbio Tec Gmbh [Member] \| Onco Hist [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Number of indefinite-lived intangible asset \| Intangible_Assets	1	1
Fair value of indefinite-lived intangible asset					$ 9,580,000

Annual report pursuant to Section 13 and 15(d)

Goodwill and Indefinite-Lived Intangible Assets - Additional Information (Detail)