Stock-Based Compensation (Schedule of Stock-Based Compensation - RSU Award Activity) (Details) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Nonvested at beginning of period (in shares) | shares	90,266
Number of Shares, Granted (in shares) | shares	26,381
Number of Shares, Vested (in shares) | shares	(40,423)
Number of Shares, Cancelled (in shares) | shares	(16,308)
Number of Shares, Nonvested at end of period (in shares) | shares	59,916
Weighted Average Grant Date Fair Value, Nonvested at beginning of period (in dollars per share) | $ / shares	$ 12.08
Weighted Average Grant Date Fair Value, Granted (in dollars per share) | $ / shares	17.36
Weighted Average Grant Date Fair Value, Vested (in dollars per share) | $ / shares	9.49
Weighted Average Grant Date Fair Value, Cancelled (in dollars per share) | $ / shares	11.68
Weighted Average Grant Date Fair Value, Nonvested at end of period (in dollars per share) | $ / shares	$ 15.38