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Stock-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Jan. 15, 2019	Jan. 31, 2018
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares exercised, options			15,578
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted (in shares)			15,702
Equity Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for granting	750,000		750,000
Shares available to be granted	636,465		636,465
Award description			The Company may issue shares of common stock or grant other equity-based awards pursuant to the 2016 Equity Plan. Stock-based awards granted to date generally are time-based, vest in equal installments on each anniversary of the grant date and range over a one- to five-year period of time, and, in the case of stock options, expire 10 years from the grant date. As part of the 2016 Equity Plan, a performance equity incentive award program, known as the "Long-term incentive plan" allows participating officers of the Company to earn incentive awards of performance share/restricted stock units if certain pre-determined targets are achieved at the end of a three-year performance cycle. Stock-based compensation expense based on the grant date fair value is recognized ratably over the requisite service period for all awards and reflects forfeitures as they occur.
Other than options, vested, fair value			$ 0	$ 520,000
Equity Plan 2016 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration			10 years
Equity Plan 2016 [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award method used for valuation			Black-Scholes valuation model
Share price	$ 15.41		$ 15.41				$ 14.66	$ 17.92
Options, Weighted average remaining contractual term			5 years
Options, granted, weighted average fair value	$ 0	$ 0	$ 0	$ 0
Options, outstanding intrinsic value	$ 72,000		$ 72,000
Options, exercised, intrinsic value			72,000			$ 365,000
Options, exercisable, intrinsic value	$ 72,000		$ 72,000
Equity Plan 2016 [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Other than options, vested, fair value			$ 241,000	$ 383,000
Maximum [Member] \| Equity Plan 2016 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years
Maximum [Member] \| Equity Plan 2016 [Member] \| Restricted Stock Units [Member] \| Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, vested, fair value					$ 24,726
Minimum [Member] \| Equity Plan 2016 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Minimum [Member] \| Equity Plan 2016 [Member] \| Restricted Stock Units [Member] \| Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, vested, fair value					$ 6,178