Securities (Tables)

12 Months Ended

Dec. 31, 2017

Securities [Abstract]

Amortized cost and estimated fair values of AFS securities

The amortized cost and estimated fair values of our AFS securities portfolio was as follows as of December 31, 2017:

	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	(dollars in thousands)
U.S. government agency notes	$	10,169	$	-	$	50	$	10,119

Amortized cost and estimated fair values of HTM securities

The amortized cost and estimated fair values of our HTM securities portfolio were as follows as of December 31:

	2017
	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	(dollars in thousands)
U.S. Treasury securities	$	4,994	$	68	$	6	$	5,056
U.S. government agency notes		19,004		81		99		18,986
Mortgage-backed securities		30,305		27		370		29,962
	$	54,303	$	176	$	475	$	54,004

	2016
	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	(dollars in thousands)
U.S. Treasury securities	$	12,998	$	167	$	-	$	13,165
U.S. government agency notes		20,027		133		54		20,106
Mortgage-backed securities		29,732		52		228		29,556
	$	62,757	$	352	$	282	$	62,827

Schedule of temporary impairment losses

Gross unrealized losses and fair value by length of time that the individual HTM securities have been in an unrealized loss position at the dates indicated are presented in the following tables as of December 31:

	2017
	Less than 12 months				12 months or more				Total
	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
	(dollars in thousands)
U.S. Treasury securities	$	1,993	$	6	$	-	$	-	$	1,993	$	6
U.S. government agency notes		6,977		23		6,964		76		13,941		99
Mortgage-backed securities		20,993		217		7,046		153		28,039		370
	$	29,963	$	246	$	14,010	$	229	$	43,973	$	475

	2016
	Less than 12 months				12 months or more				Total
	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
	(dollars in thousands)
U.S. government agency notes	$	5,002	$	54	$	-	$	-	$	5,002	$	54
Mortgage-backed securities		23,457		228		-		-		23,457		228
	$	28,459	$	282	$	-	$	-	$	28,459	$	282

Amortized cost and estimated fair value of debt securities

Contractual maturities of debt securities at December 31, 2017 are shown below.  Actual maturities may differ from contractual maturities because borrowers have the right to call or prepay obligations with or without call or prepayment penalties.

		AFS Securities				HTM Securities
		Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(dollars in thousands)
Due in one year or less		$	-	$	-	$	10,011	$	10,008
Due after one through five years			10,169		10,119		12,020		11,990
Due after five years through ten years			-		-		1,967		2,044
Mortgage-backed securities			-		-		30,305		29,962
		$	10,169	$	10,119	$	54,303	$	54,004