Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

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Long-Term Debt (Narrative) (Details) (USD $)
 3 Months Ended 3 Months Ended 0 Months Ended 0 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Senior Notes [Member]
Dec. 31, 2013
Senior Notes [Member]
Sep. 30, 2013
Senior Notes [Member]
Dec. 21, 2012
Senior Notes [Member]
Oct. 17, 2012
Senior Notes [Member]
Oct. 09, 2012
Senior Notes [Member]
Mar. 31, 2014
Building Loans [Member]
Dec. 31, 2013
Building Loans [Member]
Mar. 31, 2011
Building Loans [Member]
Oct. 09, 2012
Minimum [Member]
Senior Notes [Member]
Oct. 09, 2012
Maximum [Member]
Senior Notes [Member]
Dec. 18, 2012
Nova Scotia, Amegy, KeyBank [Member]
Mar. 31, 2014
Nova Scotia, Amegy, KeyBank [Member]
Dec. 27, 2013
Nova Scotia, Amegy, KeyBank [Member]
Apr. 23, 2014
Nova Scotia, Amegy, KeyBank [Member]
Subsequent Event [Member]
Dec. 18, 2012
Nova Scotia, Amegy, KeyBank [Member]
Base Rate Loans [Member]
Dec. 18, 2012
Nova Scotia, Amegy, KeyBank [Member]
Base Rate Loans [Member]
Federal Funds Rate [Member]
Dec. 18, 2012
Nova Scotia, Amegy, KeyBank [Member]
Base Rate Loans [Member]
Eurodollar [Member]
Dec. 18, 2012
Nova Scotia, Amegy, KeyBank [Member]
Euro Dollar Loans [Member]
Mar. 31, 2014
Nova Scotia, Amegy, KeyBank [Member]
Letter of Credit [Member]
Apr. 23, 2014
Nova Scotia, Amegy, KeyBank [Member]
Letter of Credit [Member]
Subsequent Event [Member]
Debt Instrument [Line Items]                                              
Interest cost capitalized, undeveloped properties $ 2,318,000 $ 2,629,000                                          
Interest capitalized 2,318,000 2,629,000                                          
Revolving credit facility                               1,500,000,000.0              
Interest expense 3,885,000 3,479,000                                          
Borrowing capacity                             150,000,000.0   275,000,000.0         20,000,000.0 70,000,000.0
Applicable rate, minimum                                   0.50%     1.50%    
Applicable rate, maximum                                   1.50%     2.50%    
Stated interest rate         7.75%   7.75%       5.82%                        
Credit facility outstanding                             0             6,400,000.0  
Remaining borrowing capacity                             143,600,000                
Basis spread                                     0.50% 1.00%      
Debt instrument, description of rate                           LIBOR01                  
Debt covenant ratio for reasonable transactions 2.00                                            
Debt covenant ratio for EBITDAX 3.00                                            
Building Loan Outstanding Amount Of Building Loan Refinanced     300,000,000 [1] 300,000,000 [1]     300,000,000.0 [1]   1,953,000 [2] 1,995,000 [2] 2,400,000                        
Loan, periodic payment                 22,000                            
Debt issued           50,000,000.0 250,000,000.0                                
Redemption of principal amount plus aggregate net proceeds               100.00%         35.00%                    
Percentage of notes required to be outstanding for redemption                       65.00%                      
Discount issue price, price             98.534%                                
Premium issue price, percent           101.00%                                  
Unamortized discount 3,100,000           3,700,000                                
Effective interest rate           7.531% 8.00%                                
Unamortized premium $ 400,000         $ 500,000                                  
[1] On October 17, 2012, the Company issued $250.根据《体育平台》第144A条，向合格的机构买家和某些非美国投资者提供2020年到期的优先无担保票据（“十月票据”）的总本金金额.S. 根据公司之间的契约，根据《体育平台》第S条（“十月票据发行”）规定的人员, its subsidiary guarantors and Wells Fargo Bank, National Association, as the trustee (the "senior note indenture"). On December 21, 2012, the Company issued an additional $50.根据《体育平台》第144A条，向合格的机构买家和某些非美国投资者提供2020年到期的高级无担保票据（“十二月票据”）的总本金金额.S. 根据《体育平台》第S条规定的人员（“12月票据发行”）. 12月票据体育平台是作为优先票据契约下的附加证券发行的. 10月债券发行与12月债券发行合称“债券发行”。. 公司将10月份发行债券的部分净收益用于偿还其循环信贷额度下当时未偿还的所有金额. 公司将10月债券发行的剩余净收益和12月债券发行的净收益用于一般公司用途, which included funding a portion of its 2013 capital development plan. Under the senior note indenture, interest on the Notes accrues at a rate of 7.75% per annum on the outstanding principal amount from October 17, 2012, payable semi-annually on May 1 and November 1 of each year, commencing on May 1, 2013. 这些票据体育平台是公司的优先无担保债务，在付款权上与公司所有其他优先债务和对任何未来次级债务的优先付款权同等. All of the Company's existing and future restricted subsidiaries that guarantee the Company's secured revolving credit facility or certain other debt guarantee the Notes; provided, however, that the Notes are not guaranteed by Grizzly Holdings, Inc. 且不受本公司未来任何不受限制的子公司的担保. The Company may redeem some or all of the Notes at any time on or after November 1, 2016, at the redemption prices listed in the senior note indenture. Prior to November 1, 2016, 公司可以赎回票据的价格等于本金金额的100%加上“补全”溢价. In addition, prior to November 1, 2015, 公司可以用某些股票发行的净收益赎回至多35%的票据总本金, 前提体育平台是在赎回后，初始发行的票据总本金金额中至少有65%仍未偿还.
[2] In March 2011, 公司为其位于俄克拉荷马城的办公楼签订了一项新的建筑贷款协议, Oklahoma. The new loan agreement refinanced the $2.4 million outstanding under the previous building loan agreement. The new agreement matures in February 2016 and bears interest at the rate of 5.82% per annum. 新楼宇贷款每月需支付约22元的利息和本金,以俄克拉荷马城办公楼和相关土地作为抵押.