CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 18,764 $ 7,895
Accounts receivable 54,256 33,504
Due from affiliate 0 774
Other assets 3,089 2,190
Total current assets 76,109 44,363
Property, plant and equipment, net 980,341 681,993
Intangible assets, net:    
Favorable gas gathering contracts 17,880 19,958
Contract intangibles 383,306 229,596
Rights-of-way 51,808 35,986
Total intangible assets, net 452,994 285,540
Goodwill 115,888 45,478
Other noncurrent assets 14,583 6,137
Total assets 1,639,915 1,063,511
Current liabilities:    
Trade accounts payable 18,132 15,817
Due to affiliate 653 0
Deferred revenue 1,555 865
Ad valorem taxes payable 6,804 5,455
Accrued interest 12,144 16
Other current liabilities 9,055 4,308
Total current liabilities 48,343 26,461
Long-term debt 586,000 199,230
Noncurrent liability, net (Note 4) 6,374 7,420
Deferred revenue 29,683 10,899
Other noncurrent liabilities 372 254
Total liabilities 670,772 244,264
Commitments and contingencies (Note 12)      
Common limited partner capital (29,079,866 units issued and outstanding at December 31, 2013 and 24,412,427 units issued and outstanding at December 31, 2012) 566,532 418,856
Subordinated limited partner capital (24,409,850 units issued and outstanding at December 31, 2013 and 2012) 379,287 380,169
General partner interests (1,091,453 units issued and outstanding at December 31, 2013 and 996,320 issued and outstanding at December 31, 2012) 23,324 20,222
Total partners' capital 969,143 819,247
Total liabilities and partners' capital $ 1,639,915 $ 1,063,511