Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Available for sale:
Total investment securities available for sale, amortized cost	$ 72,375	$ 17,864
Total investment securities available for sale, gross unrealized gains	123	38
Total investment securities available for sale, gross unrealized losses	68	57
Total investment securities available for sale, estimated fair value	72,430	17,845
Held to maturity:
Securities held to maturity, at cost	2,917	3,083
Total investment securities held to maturity, gross unrealized gains	55	52
Total investment securities held to maturity, gross unrealized losses	0	0
Total investment securities held to maturity, estimated fair value	2,972	3,135
Municipal Bonds [Member]
Held to maturity:
Securities held to maturity, at cost	1,936	2,008
Total investment securities held to maturity, gross unrealized gains	0	0
Total investment securities held to maturity, gross unrealized losses	0	0
Total investment securities held to maturity, estimated fair value	1,936	2,008
Mortgage-backed securities [Member]
Held to maturity:
Securities held to maturity, at cost	981	1,075
Total investment securities held to maturity, gross unrealized gains	55	52
Total investment securities held to maturity, gross unrealized losses	0	0
Total investment securities held to maturity, estimated fair value	1,036	1,127
U.S. government sponsored enterprises [Member]
Available for sale:
Total investment securities available for sale, amortized cost	70,958	16,289
Total investment securities available for sale, gross unrealized gains	82	6
Total investment securities available for sale, gross unrealized losses	12	3
Total investment securities available for sale, estimated fair value	71,028	16,292
Corporate equity securities [Member]
Available for sale:
Total investment securities available for sale, amortized cost	100	106
Total investment securities available for sale, gross unrealized gains	0	0
Total investment securities available for sale, gross unrealized losses	56	54
Total investment securities available for sale, estimated fair value	44	52
Held to maturity:
Securities held to maturity, at cost	0
Total investment securities held to maturity, estimated fair value	0
Mortgage-backed securities [Member]
Available for sale:
Total investment securities available for sale, amortized cost	1,317	1,469
Total investment securities available for sale, gross unrealized gains	41	32
Total investment securities available for sale, gross unrealized losses	0	0
Total investment securities available for sale, estimated fair value	1,358	1,501
Held to maturity:
Securities held to maturity, at cost	981
Total investment securities held to maturity, estimated fair value	$ 1,036

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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