Interest (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Interest [Abstract]

Schedule of Interest Costs

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2014		2013		2014		2013
Interest capitalized beginning of period	$	5,850	$	3,312	$	2,820	$	3,243
Interest capitalized during period		3,894		86		7,452		976
Less: capitalized interest in cost of sales		(755)		(530)		(1,283)		(1,351)
Interest capitalized end of period	$	8,989	$	2,868	$	8,989	$	2,868

	Year Ended December 31,
	2013		2012
Interest capitalized beginning of period	$	3,243	$	2,991
Interest capitalized during period		1,098		1,681
Less: capitalized interest in cost of sales		(1,521)		(1,429)
Interest capitalized end of period	$	2,820	$	3,243