Long-term debt (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Components of long-term debt

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

	December 31,
	2013		2012
9.875% Senior Notes due 2020, net of discount of $5,444 and $5,969, respectively	$	294,556	$	294,031
8.25% Senior Notes due 2021	400,000		400,000
7.625% Senior Notes due 2022, including premium of $5,719 and $6,631, respectively	555,719		556,631
Senior secured revolving credit facility	272,000		25,000
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	11,202		12,596
Installment notes payable, principal and interest payable monthly, bearing interest at rates ranging from 2.87% to 6.79%, due January 2014 through February 2018; collateralized by automobiles, machinery and equipment	5,235		5,144
Capital lease obligations	24,150		—
	1,562,862		1,293,402
Less current maturities	5,334		3,746
	$	1,557,528	$	1,289,656

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, 2013:

2014	$	5,334
2015	4,837
2016	3,757
2017	275,250
2018	3,302
2019 and thereafter	1,270,107
	$	1,562,587