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General Basket

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Net Cash Proceeds from Qualified Equity Offerings

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Percent of Debt Instrument Par Value Issued

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Percent of consolidated net income

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt discount.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after accumulated amortization, of debt premium.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Fair value of the amount outstanding under the credit facility.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Notes Payable - Additional Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 04, 2017	Mar. 17, 2017	Dec. 19, 2016
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	$ 1,700	$ 2,200
Debt Instrument, Unamortized Premium	1,300	1,800
Debt Instrument, Unamortized Debt Issuance Costs	$ 4,500	5,900
Interest rate	7.25%
Unsecured revolving credit facility	$ 67,500	0
Long-term Debt	387,648	318,656
Gain (Loss) on Extinguishment of Debt	$ 0	0	$ 250
Notes Payable with Land Sellers [Member]
Debt Instrument [Line Items]
Long-term Debt		4,000				$ 3,750
Notes Payable with Land Sellers [Member] \| 2012 Notes Payable to Land Seller [Member]
Debt Instrument [Line Items]
Interest rate			7.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate at period end	5.50%
Maximum borrowing capacity	$ 200,000
Revolving Credit Facility [Member] \| Minimum [Member] \| Unsecured revolving credit facility \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Revolving Credit Facility [Member] \| Maximum [Member] \| Unsecured revolving credit facility \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 25,000
Letters of Credit Outstanding, Amount	2,300	$ 3,400
Accordion Feature Maximum Borrowing Capacity [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	300,000
Sr Notes Due 2022 [Member]
Debt Instrument [Line Items]
Face value of note					$ 250,000
Percent of Debt Instrument Par Value Issued					98.96%
Interest rate at period end					7.50%
Sr Notes Due 2022 Tack-on [Member]
Debt Instrument [Line Items]
Face value of note				$ 75,000
Percent of Debt Instrument Par Value Issued				102.75%
Interest rate at period end				6.44%
Existing or future credit facility borrowings [Member] \| Sr Notes Due 2022 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 260,000
Basket limitation components [Member] \| Sr Notes Due 2022 [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Percent of consolidated net income	50.00%
Net Cash Proceeds from Qualified Equity Offerings	100.00%
Consolidated tangible net assets	15.00%
Basket Limitation	$ 15,000