Investment Securities (Tables)

3 Months Ended

Mar. 31, 2013

Investment Securities [Abstract]

Amortized cost and approximate fair values of securities with unrealized gains and losses

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available for sale at March 31, 2013
Ginnie Mae and GSE mortgage-backed pass-through securities	$	30,288	$	619	$	2	$	30,905
Ginnie Mae collateralized mortgage obligations		2,518		—		12		2,506
Mutual fund		1,754		92		—		1,846
	$	34,560	$	711	$	14	$	35,257

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Held to Maturity at March 31, 2013
Municipal securities	$	2,348	$	25	$	—	$	2,373

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available for sale at December 31, 2012
Ginnie Mae and GSE mortgage-backed pass-through securities	$	33,977	$	917	$	1	$	34,893
Ginnie Mae collateralized mortgage obligations		2,562		—		8		2,554
Mutual fund		1,744		105		—		1,849
	$	38,283	$	1,022	$	9	$	39,296

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Held to Maturity at December 31, 2012
Municipal securities	$	2,349	$	—	$	—	$	2,349

Amortized cost and fair value of securities available for sale, by contractual maturity

	Available for Sale
	Amortized Cost		Fair Value
Within one year	$	—	$	—
One to five years		—		—
Five to ten years		—		—
After ten years		—		—
		—		—
Ginnie Mae and GSE mortgage-backed pass-through securities		30,288		30,905
Ginnie Mae collateralized mortgage obligations		2,518		2,506
Mutual fund		1,754		1,846
	$	34,560	$	35,257

	Held to Maturity
	Amortized Cost		Fair Value
Within one year	$	—	$	—
One to five years		200		202
Five to ten years		446		450
After ten years		1,702		1,721
Municipal securities	$	2,348	$	2,373

Company's investments' gross unrealized losses and fair value

At March 31, 2013	Less Than 12 Months				12 Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Ginnie Mae and GSE mortgage-backed pass-through securities	$	4,606	$	2	$	—	$	—	$	4,606	$	2
Ginnie Mae collateralized mortgage obligations		2,506		12		—		—		2,506		12
	$	7,112	$	14	$	—	$	—	$	7,112	$	14

At December 31, 2012	Less Than 12 Months				12 Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Ginnie Mae and GSE mortgage-backed pass-through securities	$	51	$	1	$	—	$	—	$	51	$	1
Ginnie Mae collateralized mortgage obligations		2,554		8		—		—		2,554		8
	$	2,605	$	9	$	—	$	—	$	2,605	$	9