Label	Element	Value
Common Class B [Member]
Common stock, shares authorized (in shares)	us-gaap_CommonStockSharesAuthorized	10,000,000
Common stock, shares outstanding (in shares)	us-gaap_CommonStockSharesOutstanding	1,718,002
Cumulative Preferred Stock [Member]
Preferred stock, outstanding (in shares)	us-gaap_PreferredStockSharesOutstanding	200,000
Preferred stock, shares authorized (in shares)	us-gaap_PreferredStockSharesAuthorized	200,000
Common Class A [Member]
Common stock, shares authorized (in shares)	us-gaap_CommonStockSharesAuthorized	20,000,000
Common stock, shares outstanding (in shares)	us-gaap_CommonStockSharesOutstanding	7,374,239
Cumulative Convertible Preferred Stock [Member]
Preferred stock, outstanding (in shares)	us-gaap_PreferredStockSharesOutstanding	807,240
Preferred stock, shares authorized (in shares)	us-gaap_PreferredStockSharesAuthorized	1,400,000
Series 2003 Convertible Preferred Stock [Member]
Preferred stock, outstanding (in shares)	us-gaap_PreferredStockSharesOutstanding	500
Preferred stock, shares authorized (in shares)	us-gaap_PreferredStockSharesAuthorized	500
Participating Convertible Preferred Stock [Member]
Preferred stock, outstanding (in shares)	us-gaap_PreferredStockSharesOutstanding	35,355
Preferred stock, shares authorized (in shares)	us-gaap_PreferredStockSharesAuthorized	35,355