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Stock-Based Compensation and Awards (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of weighted average assumptions

The weighted average grant date fair value for stock options granted during the years ended December 31, 2014 and 2013 was $14.47 and $10.19, respectively, and was estimated using the Black-Scholes option valuation model with the following weighted average assumptions:

	Years Ended December 31,
	2014			2013
Expected life in years	4.5			4.5
Risk-free interest rate	1.33	%		0.66	%
Volatility	46.51	%		49.19	%
Dividend yield	1.5	%		0.0	%

Summary of stock option activity

The following table presents stock option activity during the year ended December 31, 2015:

	Stock Options (in thousands)			Weighted Average Exercise Price Per Share (2)				Weighted Average Remaining Life (in years)		Aggregate Intrinsic Value (in thousands)
Options outstanding, January 1, 2015	1,495			$	33.39
Granted	—			—
Exercised	(90	)		12.29
Canceled	(300	)		59.91
Spin-off of Exterran Corporation (1)	142			(56.65		)
Options outstanding, December 31, 2015	1,247			18.28				2.2		$	278
Options exercisable, December 31, 2015	1,118			17.97				1.9		278

⁽¹⁾  Reflects adjustment of awards outstanding and the exercise price as a result of the Spin-off.

⁽²⁾  Activity prior to the Spin-off reflects historical exercise price.

Schedule of restricted stock, restricted stock unit, performance unit, cash settled restricted stock unit and cash settled performance award activity

The following table presents restricted stock, stock-settled restricted stock unit, performance unit, cash-settled restricted stock unit and cash-settled performance unit activity during the year ended December 31, 2015:

	Shares (in thousands)			Weighted Average Grant-Date Fair Value Per Share (3)
Non-vested awards, January 1, 2015	1,170			$	27.37
Granted	1,008			25.49
Vested	(809	)		23.05
Canceled	(53	)		30.25
Spin-off of Exterran Corporation (1)	(161	)		(99.93		)
Non-vested awards, December 31, 2015 (2)	1,155			18.50

⁽¹⁾  Reflects adjustment of outstanding awards in connection with and the grant date fair value adjusted as a result of, the Spin-off.

⁽²⁾  Non-vested awards as of December 31, 2015 are comprised of 55,000 cash settled restricted stock units and cash settled performance units and 1,100,000 restricted shares, stock-settled restricted stock units and performance units.

⁽³⁾  Excluding the Spin-off of Exterran Corporation adjustment, reflects historical grant date fair value.

Schedule of phantom unit activity

The following table presents phantom unit activity during the year ended December 31, 2015:

	Phantom Units (in thousands)			Weighted Average Grant-Date Fair Value per Unit
Phantom units outstanding, January 1, 2015	92			$	27.38
Granted	45			24.87
Vested	(60	)		25.94
Phantom units outstanding, December 31, 2015	77			27.01

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Tabular disclosure of the changes in outstanding nonvested shares.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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