Equity-Based Compensation (Summary of Information about Restricted Stock Units and Weighted Average Grant Date Fair Value) (Details)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Restricted stock units
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares) | shares	395,353
Granted (in shares) | shares	152,972
Vested (in shares) | shares	(162,690)
Forfeited (in shares) | shares	(11,203)
Balance at end of period (in shares) | shares	374,432
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share) | $ / shares	$ 27.61
Granted (in USD per share) | $ / shares	39.73
Vested (in USD per share) | $ / shares	24.31
Forfeited (in USD per share) | $ / shares	35.72
Balance at end of period (in USD per share) | $ / shares	$ 33.74
Common stock
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares) | shares	0
Granted (in shares) | shares	7,509
Vested (in shares) | shares	(7,509)
Forfeited (in shares) | shares	0
Balance at end of period (in shares) | shares	0
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share) | $ / shares	$ 0
Granted (in USD per share) | $ / shares	37.95
Vested (in USD per share) | $ / shares	37.95
Forfeited (in USD per share) | $ / shares	0
Balance at end of period (in USD per share) | $ / shares	$ 0
Performance stock units
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares) | shares	235,485
Granted (in shares) | shares	194,658
Vested (in shares) | shares	(92,696)
Forfeited (in shares) | shares	(8,190)
Balance at end of period (in shares) | shares	329,257
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share) | $ / shares	$ 33.78
Granted (in USD per share) | $ / shares	40.49
Vested (in USD per share) | $ / shares	28.99
Forfeited (in USD per share) | $ / shares	46.05
Balance at end of period (in USD per share) | $ / shares	$ 38.53
Deferred stock units
Restricted Stock Units / Restricted Stock (in shares)
Balance at beginning of period (in shares) | shares	27,243
Granted (in shares) | shares	7,509
Vested (in shares) | shares	0
Forfeited (in shares) | shares	0
Balance at end of period (in shares) | shares	34,752
Weighted Average Grant Date Fair Value (in dollars per share)
Balance at beginning of period (in USD per share) | $ / shares	$ 33.18
Granted (in USD per share) | $ / shares	37.95
Vested (in USD per share) | $ / shares	0
Forfeited (in USD per share) | $ / shares	0
Balance at end of period (in USD per share) | $ / shares	$ 34.21
Minimum | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Percent of grants awarded based on target threshold	0.00%
Maximum | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Percent of grants awarded based on target threshold	200.00%
2015 Equity Incentive Plan | Return On Invested Capital | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period	1 year
2015 Equity Incentive Plan | Gross Profit Threshold | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period	2 years
2015 Equity Incentive Plan | Total Shareholder Return | Performance stock units
Weighted Average Grant Date Fair Value (in dollars per share)
Award performance period	3 years