Other Long-term Liabilities (Tables)

6 Months Ended

Jun. 30, 2012

Leases [Abstract]

Schedule of Capital Leased Asssets

Compressor equipment	$	37,199
Less: Accumulated amortization		(12,087)
Net assets under capital leases	$	25,112
The following are the minimum lease payments to be made in each of the following years indicated for the capital leases in effect as of June 30, 2012 (in thousands):

Schedule of Future Minimum Lease Payments for Capital Leases

2012	$	2,291
2013 through 2016 ($4,582 annually)		18,328
Thereafter		12,100
Less: Interest		(5,888)
Net minimum lease payments under capital lease		26,831
Less: Current portion of net minimum lease payments		(4,448)
Long-term portion of net minimum lease payments	$	22,383