Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Table Text Block [Abstract]

Inventories Table

	December 31, 2014		December 31, 2013
	(In Thousands)
Parts and supplies	$	43,202	$	13,859
Work in progress	69,928		170
Total inventories	$	113,130	$	14,029

Services Revenues and Costs Table

	December 31, 2014		December 31, 2013
	(In Thousands)
Rental revenue	$	95,979	$	12,674
Rental expenses	52,819		7,589

Property, Plant, and Equipment Table

Compressors	12–20years
Other equipment	3–8years
Vehicles	3 years
Information systems	3 years

Accumulated Other Comprehensive Income Table

	Year Ended December 31,
	2014			2013			2012
	(In Thousands)
Balance, beginning of year	$	413		$	1,004		$	902
Foreign currency translation adjustment, net of taxes of $0 in 2014, $0 in 2013, and $0 in 2012	(3,749		)	(591		)	102
Balance, end of year	$	(3,336	)	$	413		$	1,004

Fair Value Measurements on a Recurring Basis Table

			Fair Value Measurements Using
Description	Total as of Dec 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In Thousands)
Asset for foreign currency derivative contracts	$	—	$	—	$	—	$	—
Liability for foreign currency derivative contracts	—		—		—		—
	$	—

			Fair Value Measurements Using
Description	Total as of Dec 31, 2013		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In Thousands)
Asset for foreign currency derivative contracts	$	32	$	—	$	32	$	—
Liability for foreign currency derivative contracts	—		—		—		—
	$	32