Debt Securities Available for Sale (Amortized Cost and Gross Unrealized Gains and Losses on Securities Available for Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Debt Securities, Amortized Cost	$ 132,900	$ 116,560
Debt securities: Gross Unrealized Gains	57	47
Debt securities: Gross Unrealized Losses	5,666	2,312
Debt securities: Fair Value	127,291	114,295
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt securities, Due after one year through five years, Amortized Cost	5,210	3,276
Debt securities, Due after five years through ten years, Amortized Cost	4,170	622
Debt securities, Due after ten years, Amortized Cost	119,842	110,156
Debt securities, Due after one year through five years, Gross Unrealized Gains		3
Debt securities, Due after ten years, Gross Unrealized Gains	57	44
Debt securities: Due after one year through five years, Gross Unrealized Losses	160	76
Debt securities: Due after five years through ten years, Gross Unrealized Losses	30	10
Debt securities: Due after ten years, Gross Unrealized Losses	5,471	2,222
Debt securities: Due after one year through five years, Fair Value	5,050	3,203
Debt securities: Due after five years through ten years, Fair Value	4,140	612
Debt securities: Due after ten years, Fair Value	114,428	107,978
Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt securities, Due within one year, Amortized Cost		2,506
Debt securities, Due after one year through five years, Amortized Cost	493
Debt securities, Due after five years through ten years, Amortized Cost	2,140
Debt securities, Due after ten years, Amortized Cost	1,045
Debt securities: Due within one year, Gross Unrealized Losses		4
Debt securities: Due after five years through ten years, Gross Unrealized Losses	5
Debt securities: Due within one year, Fair Value		$ 2,502
Debt securities: Due after one year through five years, Fair Value	493
Debt securities: Due after five years through ten years, Fair Value	2,135
Debt securities: Due after ten years, Fair Value	$ 1,045

Available-for-sale Securities, Debt Maturities, after Ten Years, Gross Unrealized Gains.

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Available-for-sale Securities, Debt Maturities, after Ten Years, Gross Unrealized Losses.

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Available For Sale Securities, Debt Maturities, Within One Year, Gross Unrealized Losses

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- Definition

Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Gross Unrealized Losses.

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Available For Sale Securities, Debt Maturities, Year Two Through Year Five, Gross Unrealized Gains

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Available For Sale Securities, Debt Maturities, Year Two Through Year Five, Gross Unrealized Losses

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after adjustments of available-for-sale debt securities at cost, maturing after the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing after the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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