Leasehold Improvements, Equipment and Construction in Progress, net (Tables)

12 Months Ended

Dec. 31, 2012

Leasehold Improvements, Equipment and Construction in Progress, net

Summary of leasehold improvements, equipment, and construction in progress and related accumulated depreciation and amortization

		December 31
	Ranges of Estimated Useful Life	2012			2011
Equipment	2 - 5 Years	$	28,498		$	12,021
Software	3 - 10 Years		15,031			12,643
Vehicles	4 Years		9,353			9,405
Other	10 Years		367			2,464
Leasehold improvements	Shorter of lease term or economic life up to 10 years		17,920			9,732
Construction in progress			2,086			2,255
			73,255			48,520
Less accumulated depreciation and amortization			(34,917	)		(31,788	)
			38,338			16,732
Land			1,672			—
Leasehold improvements, equipment, land and construction in progress, net		$	40,010		$	16,732