Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v2.4.1.9
Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Operating Loss Carryforwards [Line Items]    
Federal net operating losses expiry time period 20 years  
Uncertain tax position $ 0us-gaap_UnrecognizedTaxBenefits $ 0us-gaap_UnrecognizedTaxBenefits
Deferred Federal Tax [Member]    
Operating Loss Carryforwards [Line Items]    
Federal and state operating loss carryforwards 15,300,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember 		 
Federal and state net operating losses expiry time period Dec. 31, 2028  
Deferred State and Local Tax [Member]    
Operating Loss Carryforwards [Line Items]    
Federal and state operating loss carryforwards   $ 14,300,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember
Federal and state net operating losses expiry time period Dec. 31, 2015  
Net operating loss substantial portion expiration period 2017  
Minimum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards expiration period 5 years  
Minimum [Member] | Deferred State and Local Tax [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss remaining carryforward period 10 years  
Maximum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards expiration period 20 years