Provision for Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Provision For Income Taxes [Line Items]
Net operating loss carry forwards	$ 63,600,000
Deferred tax benefit	$ 0	$ 0
Minimum [Member]
Provision For Income Taxes [Line Items]
Net operating loss expiration, Year	2015
Maximum [Member]
Provision For Income Taxes [Line Items]
Net operating loss expiration, Year	2033