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CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
STOCKHOLDERS' DEFICIENCY    
Preferred stock, par value $ 1.00us-gaap_PreferredStockParOrStatedValuePerShare $ 1.00us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, authorized 5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, liquidation preference (excluding cumulative dividends) $ 8,000,000PGAI_PreferredStockLiquidationPreferenceTotalValue $ 8,000,000PGAI_PreferredStockLiquidationPreferenceTotalValue
Preferred stock - Class A cumulative convertible shares, issued 2,000,000us-gaap_PreferredStockSharesIssued 2,000,000us-gaap_PreferredStockSharesIssued
Preferred stock - Class A cumulative convertible shares, outstanding 2,000,000us-gaap_PreferredStockSharesOutstanding 2,000,000us-gaap_PreferredStockSharesOutstanding
Common stock, par value $ 0.10us-gaap_CommonStockParOrStatedValuePerShare $ 0.10us-gaap_CommonStockParOrStatedValuePerShare
Common stock, authorized 25,000,000us-gaap_CommonStockSharesAuthorized 25,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued 5,317,758us-gaap_CommonStockSharesIssued 5,317,758us-gaap_CommonStockSharesIssued
Common stock, outstanding 5,317,758us-gaap_CommonStockSharesOutstanding 5,317,758us-gaap_CommonStockSharesOutstanding