Common Stock (Tables)

12 Months Ended

Dec. 31, 2016

Equity and Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock option activity

A summary of the transactions within the Company’s stock option plans follows (shares in thousands):

	Shares		Weighted-Average Exercise Price
Outstanding at January 1, 2014	875		$	17.85
Granted	—		—
Exercised	(213	)	11.21
Canceled	(10	)	19.98
Outstanding at December 31, 2014	652		19.99
Granted	—		—
Exercised	(87	)	13.54
Canceled	(4	)	20.29
Outstanding at December 31, 2015	561		20.99
Granted	—		—
Exercised	(54	)	17.42
Canceled	—		—
Outstanding at December 31, 2016	507		21.37
Exercisable at December 31, 2014	564		$	16.18
Exercisable at December 31, 2015	537		$	19.49
Exercisable at December 31, 2016	507		$	21.37

Schedule of share authorized under stock option plan, by exercise price range

As of December 31, 2016 (options in thousands):

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Amount Outstanding	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Amount Exercisable	Weighted Average Exercise Price
$0.01-5.00	100	2.2	$	3.38	100	$	3.38
5.01-10.00	169	3.2	8.32		169	8.32
10.01-15.00	12	2.1	14.50		12	14.50
15.01-20.00	12	2.8	15.22		12	15.22
25.01-30.00	27	3.2	26.01		27	26.01
30.01-35.00	62	4.2	31.49		62	31.49
40.01-45.00	51	5.1	41.25		51	41.25
50.01-55.00	74	6.2	53.78		74	53.78
	507		$	21.37	507	$	21.37

Summary of options outstanding

The following table presents information associated with options as of December 31, 2016 and 2015, and for the years ended December 31, 2016, 2015 and 2014:

	2016		2015		2014
Intrinsic value of options outstanding as of December 31	$	43	$	29
Intrinsic value of options exercisable as of December 31	43		28
Intrinsic value of options exercised	4		7		17
Weighted-average grant date fair value per option	$	—	$	—	$	—

Summary of restricted stock units activity

A summary of RSU activity for the year ended December 31, 2016 follows (RSUs in thousands):

	Stock Units		Weighted-Average Grant Date Fair Value
Nonvested as of December 31, 2015	530		$	81.94
Granted	901		60.55
Vested	(645	)	64.62
Forfeited	(35	)	79.19
Nonvested as of December 31, 2016	751		$	71.29

A summary of RSUs granted follows (RSUs in thousands):

	Year Ended December 31,
	2016		2015		2014
RSUs granted	901		463		805
Weighted-average grant date price per unit	$	60.55	$	86.84	$	92.28