Business Combination, Potential to Pay Additional Consideration, Performance Targets Met, Period Post Acquisition Date

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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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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- Definition

Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

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- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Business Combination (Narrative) (Details) - USD ($)			2 Months Ended	3 Months Ended		5 Months Ended	9 Months Ended
Business Combination (Narrative) (Details) - USD ($)	Sep. 30, 2018	Apr. 26, 2018	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition [Line Items]
Homebuilding revenues				$ 149,992,000	$ 113,706,000		$ 433,267,000	$ 317,994,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest				20,107,000	$ 17,293,000		60,948,000	$ 43,220,000
GHO Homes
Business Acquisition [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest			$ 3,000,000
GHO Homes
Business Acquisition [Line Items]
Percent of equity interests acquired		80.00%
Ownership percentage by noncontrolling owners		20.00%
Business Combination, Consideration Transferred			42,200,000			$ 44,600,000
Cash paid to previous owner of GHO Homes			33,200,000	$ 2,000,000
Contingent consideration	$ 500,000	$ 600,000.0
Potential obligation to pay additional contingent consideration if certain annual performance targets are met, period following acquisition date		3 years
Integration costs incurred							$ 500,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest		$ 35,774,000
GHO Homes \| Previous Owner of GHO Homes
Business Acquisition [Line Items]
Ownership percentage by noncontrolling owners	20.00%	20.00%		20.00%		20.00%	20.00%
Builder operations \| GHO Homes
Business Acquisition [Line Items]
Homebuilding revenues			$ 29,800,000
Florida Based Controlled Builder [Member]
Business Acquisition [Line Items]
Percent of equity interests acquired	80.00%			80.00%		80.00%	80.00%