Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Stock-Based Compensation

Schedule of total stock-based compensation expense

	Three Months Ended March 31,
	2016		2015
Stock option compensation expense	$	1,789	$	1,950
Restricted stock unit compensation expense	1,632		1,830
Total stock-based compensation expense	$	3,421	$	3,780

Schedule of total unrecognized stock-based compensation

	March 31,		December 31,
	2016		2015
Unrecognized stock option compensation expense	$	6,995	$	4,217
Unrecognized restricted stock unit compensation expense	8,130		5,094
Total unrecognized stock-based compensation expense	$	15,125	$	9,311

Schedule of the assumptions utilized for calculating the fair value of stock options

	Three Months Ended March 31,
	2016		2015
KapStone Stock Options Black-Scholes assumptions (weighted average):
Expected volatility	43.61	%	39.08	%
Expected life (years)	5.07		4.90
Risk-free interest rate	1.35	%	1.35	%
Expected dividend yield	3.14	%	1.25	%

Summary of stock options amounts and activity

			Weighted		Weighted	Intrinsic
			Average		Average	Value
			Exercise		Remaining	(dollars in
	Options		Price		Life (Years)	thousands)
Outstanding at January 1, 2016	3,265,900		$	15.45
Granted	1,237,455		12.72
Exercised	(45,932	)	8.23
Lapsed (forfeited or cancelled)	(13,030	)	31.51
Outstanding at March 31, 2016	4,444,393		$	14.72
Exercisable at March 31, 2016	2,334,518		$	10.05	5.3	$	12,784

Summary of unvested restricted stock units amounts and activity

			Weighted
			Average
			Grant
	Units		Price
Outstanding at January 1, 2016	550,009		$	24.60
Granted	384,572		12.72
Vested	(183,370	)	13.83
Forfeited	(7,743	)	30.16
Outstanding at March 31, 2016	743,468		$	21.07