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Stockholders' Equity (Deficit) (Details Textual) (USD $)
Jun. 30, 2012
Dec. 31, 2011
Jun. 09, 2008
Mar. 07, 1997
Class of Stock [Line Items]        
Total Shares Authorized     38,000,000alpe_TotalSharesAuthorized 18,000,000alpe_TotalSharesAuthorized
Common Stock, Shares Authorized 35,000,000us-gaap_CommonStockSharesAuthorized 35,000,000us-gaap_CommonStockSharesAuthorized 35,000,000us-gaap_CommonStockSharesAuthorized 15,000,000us-gaap_CommonStockSharesAuthorized
Common Stock, Par or Stated Value Per Share $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Preferred Stock, Shares Authorized 2,000,000us-gaap_PreferredStockSharesAuthorized 2,000,000us-gaap_PreferredStockSharesAuthorized 2,000,000us-gaap_PreferredStockSharesAuthorized 2,000,000us-gaap_PreferredStockSharesAuthorized
Preferred Stock, Par or Stated Value Per Share $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Common Class B [Member]        
Class of Stock [Line Items]        
Common Stock, Shares Authorized 1,000,000us-gaap_CommonStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
1,000,000us-gaap_CommonStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
1,000,000us-gaap_CommonStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
1,000,000us-gaap_CommonStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Common Stock, Par or Stated Value Per Share       $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember