Contractual interest rate for funds borrowed, under the debt agreement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
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The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 45
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Number of Land Acquisitions Using Seller Financing

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Senior Notes, Secured, and Unsecured Indebtedness - Narrative (Details) $ in Thousands	Sep. 30, 2016 USD ($) land_acquisition	Dec. 31, 2015 USD ($)	Aug. 11, 2014	Mar. 31, 2014	Nov. 08, 2012
Debt Instrument [Line Items]
Deferred loan costs	$ 11,400
Notes payable	$ 259,342	$ 175,181
Number of land acquisitions using seller financing \| land_acquisition	2
8 1/2% Senior Notes due November 15, 2020
Debt Instrument [Line Items]
Stated interest rate	8.50%	8.50%
7% Senior Notes due August 15, 2022
Debt Instrument [Line Items]
Stated interest rate	7.00%	7.00%
5 3/4% Senior Notes due April 15, 2019
Debt Instrument [Line Items]
Stated interest rate	5.75%	5.75%
8 1/2% and 7% Senior Notes
Debt Instrument [Line Items]
Unamortized premium	$ 3,800
Senior notes \| 8 1/2% Senior Notes due November 15, 2020
Debt Instrument [Line Items]
Stated interest rate	8.50%	8.50%			8.50%
Unamortized premium	$ 2,900
Deferred loan costs	$ 5,100
Senior notes \| 7% Senior Notes due August 15, 2022
Debt Instrument [Line Items]
Stated interest rate	7.00%	7.00%	7.00%
Unamortized premium	$ 900
Deferred loan costs	$ 5,000
Senior notes \| 5 3/4% Senior Notes due April 15, 2019
Debt Instrument [Line Items]
Stated interest rate	5.75%	5.75%		5.75%
Deferred loan costs	$ 1,300
Seller financing
Debt Instrument [Line Items]
Notes payable	$ 32,419	$ 0
Seller financing \| Note Payable Maturing in August 2017
Debt Instrument [Line Items]
Stated interest rate	7.00%
Notes payable	$ 3,000
Seller financing \| Note Payable Maturing in June 2018
Debt Instrument [Line Items]
Stated interest rate	7.00%
Notes payable	$ 29,400