Stock-Based Compensation (Schedule of Stock Option Activity) (Details) - Employee Stock Option [Member]	9 Months Ended
	Sep. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Outstanding at beginning of period (in shares) | shares	62,429
Number of shares, Exercised (in shares) | shares	(35,180)
Number of shares, Outstanding at end of period (in shares) | shares	27,249
Number of shares, Exercisable at end of period (in shares) | shares	27,249
Weighted Average Exercise Price, Outstanding at beginning of period | $ / shares	$ 8.48
Weighted Average Exercise Price, Exercised | $ / shares	7.54
Weighted Average Exercise Price, Outstanding at end of period | $ / shares	9.68
Weighted Average Exercise Price, Exercisable at end of period | $ / shares	$ 9.68