Components of Working Capital - Other Current Assets Table (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other Current Assets [Line Items]
Natural gas liquids inventory	$ 832	$ 2,403
Imbalance receivables	1,425	2,122
Prepaid insurance	1,807	2,998
Other	0	1,034
Total other current assets	$ 4,064	$ 8,557	[1]

[1] Financial information has been recast to include the financial position and results attributable to the Springfield system. See Note 1 and Note 2.