Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Table Text Block [Abstract]

Inventories Table

	December 31, 2015		December 31, 2014
	(In Thousands)
Parts and supplies	$	27,447	$	43,202
Work in progress	22,324		70,141
Total inventories	$	49,771	$	113,343

Services Revenues and Costs Table

	Year Ended December 31,
	2015		2014		2013
	(In Thousands)
Rental revenue	$	114,284	$	85,168	$	12,674
Rental expenses	$	67,232	$	42,174	$	7,589

Property, Plant, and Equipment Table

Buildings	15 – 30 years
Compressors	12–20years
Other equipment	2–8years
Vehicles	3 – 5 years
Information systems	3 years

Accumulated Other Comprehensive Income Table

	Year Ended December 31,
	2015			2014			2013
	(In Thousands)
Balance, beginning of year	$	(3,336	)	$	413		$	1,004
Foreign currency translation adjustment, net of tax of $0 in 2015, 2014, and 2013	(5,057		)	(3,749		)	(591		)
Balance, end of year	$	(8,393	)	$	(3,336	)	$	413

Fair Value Measurements on a Recurring Basis Table

				Fair Value Measurements Using
				Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Description	Total as of December 31, 2015
	(In Thousands)
Asset for foreign currency derivative contracts	$	—		$	—	$	—		$	—
Liability for foreign currency derivative contracts	(14		)	—		(14		)	—
	$	(14	)

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