Incentive Compensation - Summary of Stock Option Activity (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-Average Exercise Price, Outstanding at December 31, 2014 | $ / shares	$ 17.50
Weighted-Average Exercise Price, Granted | $ / shares	19.08
Weighted-Average Exercise Price, Exercised | $ / shares	17.50
Weighted-Average Exercise Price, Cancelled or expired | $ / shares	17.50
Weighted-Average Exercise Price, Outstanding at December 31, 2015 | $ / shares	17.69
Weighted-Average Exercise Price, Options vested and expected to vest at December 31, 2015 | $ / shares	17.69
Weighted-Average Exercise Price, Options exercisable at December 31, 2015 | $ / shares	$ 17.50
Weighted-Average Remaining Contractual Term (in years), Outstanding at December 31, 2015	8 years 10 months 24 days
Weighted-Average Remaining Contractual Term (in years), Options vested and expected to vest at December 31, 2015	8 years 10 months 24 days
Weighted-Average Remaining Contractual Term (in years), Options exercisable at December 31, 2015	8 years 10 months 24 days
Aggregate Intrinsic Value, Outstanding at December 31, 2015 | $	$ 854,670
Aggregate Intrinsic Value, Options vested and expected to vest at December 31, 2015 | $	803,000
Aggregate Intrinsic Value, Options exercisable at December 31, 2015 | $	$ 221,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Outstanding at December 31, 2014 | shares	1,489,500
Shares, Granted | shares	200,000
Shares, Exercised | shares	(200)
Shares, Cancelled or expired | shares	(64,850)
Shares, Outstanding at December 31, 2015 | shares	1,624,450
Shares, Options vested and expected to vest at December 31, 2015 | shares	1,524,250
Shares, Options exercisable at December 31, 2015 | shares	368,250