Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Securities held to maturity, fair value	$ 12,226	$ 13,261
Loans receivable, allowance	22,245	20,458
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	8,000,000	8,000,000
Common stock, shares issued	2,013,942	2,013,942
Common stock, shares outstanding	1,744,565	1,743,965
Accumulated other comprehensive income, tax	204	176
Treasury stock, shares	269,377	269,977
Series D | Cumulative preferred stock
Preferred non-voting stock, par value	$ 0.01	$ 0.01
Preferred non-voting stock, shares authorized	9,000	9,000
Preferred non-voting stock, shares issued	9,000	9,000
Preferred non-voting stock, shares outstanding	9,000	9,000
Preferred stock, liquidation preference	9,394	9,169
Series E | Cumulative preferred stock
Preferred non-voting stock, par value	$ 0.01	$ 0.01
Preferred non-voting stock, shares authorized	6,000	6,000
Preferred non-voting stock, shares issued	6,000	6,000
Preferred non-voting stock, shares outstanding	6,000	6,000
Preferred stock, liquidation preference	6,263	6,113
Series A | Noncumulative preferred stock
Preferred non-voting stock, shares issued	55,199	55,199
Preferred non-voting stock, shares outstanding	55,199	55,199
Preferred stock, liquidation preference	552	552
Series B | Noncumulative preferred stock
Preferred non-voting stock, shares issued	100,000	100,000
Preferred non-voting stock, shares outstanding	100,000	100,000
Preferred stock, liquidation preference	1,000	1,000
Series C | Noncumulative preferred stock
Preferred non-voting stock, shares issued	76,950	76,950
Preferred non-voting stock, shares outstanding	76,950	76,950
Preferred stock, liquidation preference	$ 1,000	$ 1,000
Noncumulative preferred stock
Preferred non-voting stock, par value	$ 0.01	$ 0.01
Preferred non-voting stock, shares authorized	1,000,000	1,000,000