Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - (Narrative) (Details)

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Related Party Transactions - (Narrative) (Details) (USD $)
0 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
May 28, 2010
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Kanders GMP Holdings, LLC [Member]
May 29, 2012
Kanders GMP Holdings, LLC [Member]
May 28, 2010
Kanders GMP Holdings, LLC [Member]
Mar. 31, 2013
Schiller Gregory Investment Company, LLC [Member]
May 29, 2012
Schiller Gregory Investment Company, LLC [Member]
May 28, 2010
Schiller Gregory Investment Company, LLC [Member]
Mar. 31, 2013
Robert R. Schiller Cornerstone Trust and Deborah Schiller 2005 Revocable Trust [Member]
Related Party Transactions [Line Items]                    
Interest paid on merger consideration subordinated notes       $ 181,000           $ 94,000
Interest paid on Gregory subordinated notes       5,000     3,000      
5% Unsecured Subordinated Notes   $ 16,267,000 $ 15,992,000   $ 365,000 $ 14,517,000   $ 189,000 $ 7,539,000  
Subordinated debt interest rate 5.00%                  
Default interest rate on subordinated debt   10.00%