Investments (Tables)

9 Months Ended

Sep. 30, 2017

Held-to-maturity Securities [Table Text Block]

Below is a summary of the amortized cost and estimated market values of the Company’s marketable securities as of September 30, 2017, and December 31, 2016.

	September 30, 2017				December 31, 2016
	Amortized		Market		Amortized		Market
	Cost		Value		Cost		Value
	(Dollars in thousands)
Municipal bonds:
Current	$	11,354	$	11,380	$	4,601	$	4,610
Due from one through five years		9,819		10,157		12,133		12,486
Due from six through ten years		5,789		6,050		7,705		7,804
Due from eleven through twenty years		2,665		2,763		1,223		1,222
Total	$	29,627	$	30,350	$	25,662	$	26,122

Unrealized Gain (Loss) on Investments [Table Text Block]

The unrealized gains and losses on marketable securities at September 30, 2017, and at December 31, 2016, were as follows:

	September 30, 2017				December 31, 2016
	Unrealized		Unrealized		Unrealized		Unrealized
	Gains		Losses		Gains		Losses
	(Dollars in thousands)
Municipal bonds	$	759	$	(36)	$	546	$	(86)

- Definition

Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.

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