Long-term debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Components of long-term debt

As of the dates indicated, long-term debt consists of the following:

	December 31,
	2014		2013
9.875% Senior Notes due 2020, net of discount of $4,861 and $5,444, respectively	$	295,139	$	294,556
8.25% Senior Notes due 2021	400,000		400,000
7.625% Senior Notes due 2022, including premium of $4,869 and $5,719, respectively	554,869		555,719
Senior secured revolving credit facility	347,000		272,000
Real estate mortgage notes, principal and interest payable monthly, bearing interest at rates ranging from 2.54% to 5.46%, due August 2021 through December 2028; collateralized by real property	10,705		11,202
Installment notes payable, principal and interest payable monthly, bearing interest at rates ranging from 2.85% to 5.95%, due January 2015 through February 2018; collateralized by automobiles, machinery and equipment	4,252		5,235
Capital lease obligations	21,837		24,150
	1,633,802		1,562,862
Less current maturities	5,377		5,334
	$	1,628,425	$	1,557,528

Maturities of long-term debt and capital leases, excluding premium or discount on our Senior Notes

Maturities of long-term debt and capital leases, excluding premiums or discounts on our senior notes, are as follows as of December 31, 2014:

2015	$	5,377
2016	4,409
2017	350,600
2018	3,302
2019	12,328
2020 and thereafter	1,257,778
	$	1,633,794