Securities (Tables)

12 Months Ended

Dec. 31, 2017

Securities

Schedule of amortized cost and approximate fair values, together with gross unrealized gains and losses

	December 31, 2017
			Gross		Gross		Approximate
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Available-for-sale securities:
Treasury notes	$	1,000	$	—	$	8	$	992
Federal agencies		376,414		—		1,683		374,731
Municipals		6,688		—		—		6,688
Mortgage-backed - Government-sponsored entity (GSE) - residential		25,960		—		—		25,960
Total available-for-sale securities	$	410,062	$	—	$	1,691	$	408,371

	December 31, 2016
			Gross		Gross		Approximate
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Available-for-sale securities:
Treasury notes	$	999	$	—	$	—	$	999
Federal agencies		290,050		—		1,057		288,993
Municipals		9,500		—		—		9,500
Mortgage-backed - Government-sponsored entity (GSE) - residential		26,382		—		—		26,382
Total available-for-sale securities	$	326,931	$	—	$	1,057	$	325,874

Schedule of amortized cost and fair value of available-for-sale securities by contractual maturity

	December 31, 2017
	Amortized		Fair
	Cost		Value
Contractual Maturity	(In thousands)
Within one year	$	164,997	$	164,321
After one through five years		212,905		211,890
After five through ten years		—		—
After ten years		6,200		6,200
		384,102		382,411
Mortgage-backed - Government-sponsored entity (GSE) - residential		25,960		25,960
	$	410,062	$	408,371

Schedule of gross unrealized losses and fair value of investments with unrealized losses have been in continuous

	December 31, 2017
					12 Months or
	Less than 12 Months				Longer				Total
			Gross				Gross				Gross
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
	(In thousands)
Available-for-sale securities:
Treasury notes	$	992	$	8	$	—	$	—	$	992	$	8
Federal agencies		191,064		903		183,667		780		374,731		1,683
	$	192,056	$	911	$	183,667	$	780	$	375,723	$	1,691

December 31, 2016

12 Months or

Less than 12 Months

Longer

Total

Gross

Gross

Gross

Fair

Unrealized

Fair

Unrealized

Fair

Unrealized

Value

Losses

Value

Losses

Value

Losses

(In thousands)

Available-for-sale securities:

Federal agencies

$

275,143

$

1,057

$

—

$

—

$

275,143

$

1,057