Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

A summary of activity and weighted average exercise prices related to the NSOs is reflected in the table below.



	Six Months Ended June 30, 2017
	Shares		Weighted Avg. Exercise Price
Outstanding, beginning of period	2,396,160		$	45.82
Granted	931,913		32.12
Exercised	(350,711	)	28.55
Forfeited	(375,634	)	28.95
Cancelled	(70,714	)	47.85
Adjustment due to the 2017 Special Cash Dividend	452,738		*
Outstanding, end of period	2,983,752		$	38.66
Vested and exercisable, end of period	1,247,501		$	47.70

A summary of activity and weighted average fair values related to the RSUs is reflected in the table below.



	Six Months Ended June 30, 2017
	Shares		Weighted Avg. Fair Value
Outstanding, beginning of period	1,230,676		$	40.92
Granted	616,042		32.65
Dividend equivalent units granted	15,834		38.02
Vested	(555,039	)	38.31
Dividend equivalent units vested	(19,358	)	32.32
Forfeited	(300,472	)	32.03
Dividend equivalent units forfeited	(8,913	)	32.01
Adjustment due to the 2017 Special Cash Dividend	223,698		*
Outstanding and nonvested, end of period	1,202,468		$	32.64


*	Not meaningful

A summary of activity and weighted average fair values related to the unrestricted stock awards is as follows:



	Six Months Ended June 30, 2017
	Shares		Weighted Avg. Fair Value
Outstanding, beginning of period	—		$	—
Granted	10,147		34.98
Vested	(10,147	)	34.98
Outstanding and nonvested, end of period	—		$	—

A summary of activity and weighted average fair values related to the PSUs and Supplemental PSUs is reflected in the table below.



	Six Months Ended June 30, 2017
	Shares		Weighted Avg. Fair Value
Outstanding, beginning of period	347,000		$	27.23
Granted (1)	117,777		31.45
Dividend equivalent units granted	2,425		38.01
Vested	(145,621	)	34.22
Dividend equivalent units vested	(3,726	)	32.50
Forfeited	(46,836	)	33.73
Dividend equivalent units forfeited	(5,601	)	40.72
Adjustment due to the 2017 Special Cash Dividend (1)(2)	24,244		*
Outstanding and nonvested, end of period	289,662		$	22.05


*	Not meaningful


(1)	Represents shares of PSUs for which performance targets have been established and which are deemed granted under U.S. GAAP.


(2)	Excludes 19,725 PSUs which have not yet been deemed granted under U.S. GAAP.

As of June 30, 2017, the Company had not yet recognized compensation cost on nonvested awards as follows (dollars in thousands):



	Unrecognized Compensation Cost		Weighted Average Remaining Recognition Period
Nonvested awards	$	47,714	2.8