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Stock-Based Compensation (Stock Options Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 16, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0	0	32,750
Weighted average grant date fair value of options granted (in dollars per share)	$ 0	$ 0	$ 11.93
Total intrinsic value of options exercised	$ 474	$ 216	$ 446
Proceeds from exercise of stock options	506	680	1,120
Unrecognized compensation cost related to stock options	16
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 124	$ 159	$ 363
Stock Options | 1998 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Award expiration period	10 years
Stock Options | 1998 Stock Option Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				1,000,000.0
Number of shares available for grant (in shares)	337,503

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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