$GRBK
Green Brick Partners, Inc. Stock $grbk

$grbk Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000162828019010464 Filed on August 08, 2019

Income Statement

Concept	2019 Q2	2018 Q2	2018 Q1
Revenue	$183.5M	$157.3M	$129.2M
YoY Change	16.65%	48.76%	28.22%
Cost Of Revenue	$143.2M	$116.2M	$96.53M
YoY Change	23.21%	41.76%	23.6%
Gross Profit	$40.28M	$41.07M	$32.63M
YoY Change	-1.92%	78.33%	51.79%
Gross Profit Margin	21.95%	26.11%	25.27%
Selling, General & Admin	$22.46M	$20.02M	$18.13M
YoY Change	12.18%	380.39%	323.77%
% of Gross Profit	55.75%	48.74%	55.55%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$790.0K	$640.0K	$402.0K
YoY Change	23.44%	700.0%	356.82%
% of Gross Profit	1.96%	1.56%	1.23%
Operating Expenses	$22.46M	$20.02M	$18.13M
YoY Change	12.18%	380.39%	323.77%
Operating Profit	$17.98M	$21.05M	$14.51M
YoY Change	-14.58%	56.8%	25.33%
Interest Expense	$2.700M	$2.300M	$1.500M
YoY Change	17.39%
% of Operating Profit	15.01%	10.92%	10.34%
Other Income/Expense, Net	$738.0K	$898.0K	$570.0K
YoY Change	-17.82%	132.64%	5.17%
Pretax Income	$21.46M	$24.23M	$16.61M
YoY Change	-11.45%	75.41%	37.11%
Income Tax	$5.300M	$5.235M	$3.372M
% Of Pretax Income	24.7%	21.61%	20.3%
Net Earnings	$14.46M	$14.87M	$11.20M
YoY Change	-2.75%	93.38%	80.78%
Net Earnings / Revenue	7.88%	9.45%	8.67%
Basic Earnings Per Share	$0.29	$0.29	$0.22
Diluted Earnings Per Share	$0.29	$0.29	$0.22
COMMON SHARES
Basic Shares Outstanding	50.66M shares	50.66M shares	50.58M shares
Diluted Shares Outstanding	50.72M shares	50.78M shares	50.72M shares

Balance Sheet

Concept	2019 Q2	2018 Q2	2018 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$34.40M	$37.10M	$34.40M
YoY Change	-7.28%	35.9%	6.5%
Cash & Equivalents	$38.85M	$41.20M	$38.85M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory	$719.9M	$581.4M	$528.5M
Prepaid Expenses
Receivables	$5.000M	$6.200M	$1.500M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$759.3M	$624.7M	$564.4M
YoY Change	21.55%	34.55%	27.87%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.261M	$3.454M	$2.108M
YoY Change	23.36%	379.72%	161.86%
Goodwill	$680.0K	$680.0K
YoY Change	0.0%
Intangibles	$750.0K	$275.0K
YoY Change	172.73%
Long-Term Investments	$23.14M	$19.49M	$17.65M
YoY Change	18.72%
Other Assets	$20.40M	$27.00M	$32.20M
YoY Change	-24.44%	-58.46%	-53.87%
Total Long-Term Assets	$73.66M	$80.35M	$78.79M
YoY Change	-8.32%	-10.75%	-14.42%
TOTAL ASSETS
Total Short-Term Assets	$759.3M	$624.7M	$564.4M
Total Long-Term Assets	$73.66M	$80.35M	$78.79M
Total Assets	$833.0M	$705.0M	$643.2M
YoY Change	18.14%	27.19%	20.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$25.40M	$19.50M	$20.20M
YoY Change	30.26%	19.63%	54.2%
Accrued Expenses	$31.50M	$21.10M	$16.30M
YoY Change	49.29%	46.53%	9.4%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$88.50M	$74.60M	$59.20M
YoY Change	18.63%	49.2%	31.26%
LONG-TERM LIABILITIES
Long-Term Debt	$245.2M	$174.3M	$144.9M
YoY Change	40.68%	107.01%	99.31%
Other Long-Term Liabilities	$600.0K	$600.0K	$0.00
YoY Change	0.0%	-93.02%	-100.0%
Total Long-Term Liabilities	$245.8M	$174.9M	$144.9M
YoY Change	40.54%	88.47%	77.14%
TOTAL LIABILITIES
Total Short-Term Liabilities	$88.50M	$74.60M	$59.20M
Total Long-Term Liabilities	$245.8M	$174.9M	$144.9M
Total Liabilities	$321.8M	$242.8M	$204.1M
YoY Change	32.52%	69.97%	60.81%
SHAREHOLDERS EQUITY
Retained Earnings	$204.6M	$152.0M	$137.1M
YoY Change	34.62%	21.76%	17.05%
Common Stock	$290.2M	$291.3M	$291.3M
YoY Change	-0.38%	5.9%	5.93%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.369M	$0.00	$0.00
YoY Change
Treasury Stock Shares
Shareholders Equity	$493.5M	$443.3M	$428.4M
YoY Change
Total Liabilities & Shareholders Equity	$833.0M	$705.0M	$643.2M
YoY Change	18.14%	27.19%	20.57%

Cashflow Statement

Concept	2019 Q2	2018 Q2	2018 Q1
OPERATING ACTIVITIES
Net Income	$14.46M	$14.87M	$11.20M
YoY Change	-2.75%	93.38%	80.78%
Depreciation, Depletion And Amortization	$790.0K	$640.0K	$402.0K
YoY Change	23.44%	700.0%	356.82%
Cash From Operating Activities	-$11.56M	$7.920M	-$20.22M
YoY Change	-245.96%	-161.49%	-222.18%
INVESTING ACTIVITIES
Capital Expenditures	-$570.0K	-$580.0K	$601.0K
YoY Change	-1.72%
Acquisitions
YoY Change
Other Investing Activities	$0.00	-$26.10M
YoY Change	-100.0%
Cash From Investing Activities	-$570.0K	-$26.68M	-$601.0K
YoY Change	-97.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	24.37M	21.11M	$19.38M
YoY Change	15.44%	209.53%	-205.79%
NET CHANGE
Cash From Operating Activities	-11.56M	7.920M	-$20.22M
Cash From Investing Activities	-570.0K	-26.68M	-$601.0K
Cash From Financing Activities	24.37M	21.11M	$19.38M
Net Change In Cash	12.24M	2.350M	-$1.441M
YoY Change	420.85%	-138.78%	-18.59%
FREE CASH FLOW
Cash From Operating Activities	-$11.56M	$7.920M	-$20.22M
Capital Expenditures	-$570.0K	-$580.0K	$601.0K
Free Cash Flow	-$10.99M	$8.500M	-$20.82M
YoY Change	-229.29%	-165.99%	-225.81%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Address Address Line1 EntityAddressAddressLine1	2805 Dallas Parkway
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 400
	dei	Entity Address City Or Town EntityAddressCityOrTown	Plano
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75093
	dei	Amendment Flag AmendmentFlag	false
	dei	City Area Code CityAreaCode	469
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Document Period End Date DocumentPeriodEndDate	2019-06-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Address State Or Province EntityAddressStateOrProvince	Texas
	dei	Entity Central Index Key EntityCentralIndexKey	0001373670
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity File Number EntityFileNumber	001-33530
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	Green Brick Partners, Inc.
	dei	Entity Shell Company EntityShellCompany	false
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	205952523
	dei	Local Phone Number LocalPhoneNumber	573-6755
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CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
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CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2019Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50719884	shares
CY2019Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50879949	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50583128	shares
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CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
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	us-gaap	Revenues Revenues	352134000	USD
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CY2019Q2	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	59401	shares
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	117000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	117000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	117000	USD
CY2019Q2	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	39320	shares
CY2019Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	328000	USD
CY2019Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	328000	USD
CY2019Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	328000	USD
CY2019Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	258000	USD
CY2019Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	258000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14460000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	101000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14460000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	643000	USD
CY2019Q2	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	15103000	USD
CY2018Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50685699	shares
CY2018Q1	us-gaap	Common Stock Value CommonStockValue	507000	USD
CY2018Q1	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	0	shares
CY2018Q1	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2018Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	290773000	USD
CY2018Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	137106000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	428386000	USD
CY2018Q1	us-gaap	Minority Interest MinorityInterest	10682000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	439068000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	72000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	72000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	72000	USD
CY2018Q2	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	34185	shares
CY2018Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	101000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	101000	USD
CY2018Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2378000	USD
CY2018Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2378000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	14869000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	14869000	USD
CY2018Q2	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	3904000	USD
CY2018Q2	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	18773000	USD
CY2018Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50719884	shares
CY2018Q2	us-gaap	Common Stock Value CommonStockValue	507000	USD
CY2018Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	0	shares
CY2018Q2	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2018Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	290842000	USD
CY2018Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	151975000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	443324000	USD
CY2018Q2	us-gaap	Minority Interest MinorityInterest	12208000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	455532000	USD
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50719884	shares
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	507000	USD
CY2018Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	136756	shares
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	981000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	291299000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	177526000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	468351000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	17281000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	485632000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	142000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	142000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	142000	USD
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	219181	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1467000	USD
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	59116	shares
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	545000	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	545000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	218000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	218000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	218000	USD
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	47182	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	388000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	388000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	388000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	10993000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	10993000	USD
	us-gaap	Net Income Loss NetIncomeLoss	27065000	USD
	us-gaap	Net Income Loss NetIncomeLoss	27065000	USD
	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	-1115000	USD
	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	25950000	USD
CY2019Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50879949	shares
CY2019Q2	us-gaap	Common Stock Value CommonStockValue	509000	USD
CY2019Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	183938	shares
CY2019Q2	us-gaap	Treasury Stock Value TreasuryStockValue	1369000	USD
CY2019Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	289739000	USD
CY2019Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	204591000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	493470000	USD
CY2019Q2	us-gaap	Minority Interest MinorityInterest	5173000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	498643000	USD
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50598901	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	506000	USD
CY2017Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	0	shares
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	289938000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	125903000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	416347000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	16691000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	433038000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	143000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	143000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	143000	USD
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	140211	shares
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1081000	USD
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	39228	shares
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	412000	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	412000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	197000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	197000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	197000	USD
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	10423000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	10423000	USD
	us-gaap	Net Income Loss NetIncomeLoss	26072000	USD
	us-gaap	Net Income Loss NetIncomeLoss	26072000	USD
	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	5940000	USD
	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	32012000	USD
CY2018Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50719884	shares
CY2018Q2	us-gaap	Common Stock Value CommonStockValue	507000	USD
CY2018Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	0	shares
CY2018Q2	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2018Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	290842000	USD
CY2018Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	151975000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	443324000	USD
CY2018Q2	us-gaap	Minority Interest MinorityInterest	12208000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	455532000	USD
	us-gaap	Profit Loss ProfitLoss	27615000	USD
	us-gaap	Profit Loss ProfitLoss	32234000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1678000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1038000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1827000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1421000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	257000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	556000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8320000	USD
	us-gaap	Increase Decrease In Earnest Money Deposits Outstanding IncreaseDecreaseInEarnestMoneyDepositsOutstanding	2355000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-752000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1174000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-669000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-7073000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1276000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	1507000	USD
	us-gaap	Payment For Contingent Consideration Liability Operating Activities PaymentForContingentConsiderationLiabilityOperatingActivities	1332000	USD
	us-gaap	Payment For Contingent Consideration Liability Operating Activities PaymentForContingentConsiderationLiabilityOperatingActivities	0	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4543000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3815000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1673000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1958000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	167000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4391000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	50647000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	43439000	USD
	us-gaap	Increase Decrease In Earnest Money Deposits Outstanding IncreaseDecreaseInEarnestMoneyDepositsOutstanding	-3882000	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-400000	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	3468000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-20794000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-12301000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	25347000	USD
	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	755000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1143000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1178000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1143000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-27280000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	93500000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	95500000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	150000	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	61500000	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	35000000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	9022000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	514000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	544000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	412000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	388000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	10993000	USD
	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	38852000	USD
CY2018Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	41201000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	10423000	USD
	us-gaap	Temporary Equity Interest In Subsidiary Earnings TemporaryEquityInterestInSubsidiaryEarnings	527000	USD
	us-gaap	Temporary Equity Interest In Subsidiary Earnings TemporaryEquityInterestInSubsidiaryEarnings	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	19034000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	40493000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-2903000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	912000	USD
CY2018Q4	us-gaap	Cash Cash	38315000	USD
CY2017Q4	us-gaap	Cash Cash	36684000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	3440000	USD
CY2017Q4	us-gaap	Restricted Cash RestrictedCash	3605000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	41755000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	40289000	USD
CY2019Q2	us-gaap	Cash Cash	34383000	USD
CY2018Q2	us-gaap	Cash Cash	37069000	USD
CY2019Q2	us-gaap	Restricted Cash RestrictedCash	4469000	USD
CY2018Q2	us-gaap	Restricted Cash RestrictedCash	4132000	USD
	us-gaap	Interest Paid Net InterestPaidNet	0	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7520000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1579000	USD
	us-gaap	Basis Of Accounting BasisOfAccounting	<div style="line-height:120%;text-align:left;text-indent:4px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;text-decoration:underline;">Basis of Presentation</span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“GAAP”) as set forth in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) and applicable regulations of the Securities and Exchange Commission (“SEC”), but do not include all of the information and footnotes required for complete financial statements. The condensed consolidated balance sheet as of </span><span style="font-family:inherit;font-size:10pt;">December 31, 2018</span><span style="font-family:inherit;font-size:10pt;"> was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended </span><span style="font-family:inherit;font-size:10pt;">December 31, 2018</span><span style="font-family:inherit;font-size:10pt;">. In the opinion of management, the accompanying unaudited condensed consolidated financial statements for the periods presented reflect all adjustments of a normal, recurring nature necessary to fairly state our financial position, results of operations and cash flows. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended </span><span style="font-family:inherit;font-size:10pt;">December 31, 2018</span><span style="font-family:inherit;font-size:10pt;">. </span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Operating results for the three and </span><span style="font-family:inherit;font-size:10pt;">six</span><span style="font-family:inherit;font-size:10pt;"> months ended </span><span style="font-family:inherit;font-size:10pt;">June 30, 2019</span><span style="font-family:inherit;font-size:10pt;"> are not necessarily indicative of the results that may be expected for the fiscal year ending </span><span style="font-family:inherit;font-size:10pt;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;"> or subsequent periods.</span></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;text-decoration:underline;">Use of Estimates</span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of the condensed consolidated financial statements in conformity with GAAP requires management of the Company to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes, including the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.</span></div>
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="line-height:120%;padding-bottom:8px;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;text-decoration:underline;">Reclassifications</span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Certain prior period amounts have been reclassified to conform to the current period presentation. </span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Beginning in the first quarter of 2019, the Company reclassified its sales commission expenses from cost of residential units to selling, general and administrative expense in the condensed consolidated statements of income in order to be more comparable with a majority of its peers. There was no impact to net income from the reclassification in any period.</span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:left;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">For a complete set of the Company’s significant accounting policies, refer to Note 1 of the Company’s Annual Report on Form 10-K for the year ended </span><span style="font-family:inherit;font-size:10pt;">December 31, 2018</span><span style="font-family:inherit;font-size:10pt;">. Changes and additions to significant accounting policies during the </span><span style="font-family:inherit;font-size:10pt;">six</span><span style="font-family:inherit;font-size:10pt;"> months ended </span><span style="font-family:inherit;font-size:10pt;">June 30, 2019</span><span style="font-family:inherit;font-size:10pt;"> are presented below.</span></div>
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	4200000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4100000	USD
CY2019Q1	us-gaap	Deferred Rent Credit DeferredRentCredit	100000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Common Carrying Amount RedeemableNoncontrollingInterestEquityCommonCarryingAmount	8531000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	1665000	USD
	us-gaap	Temporary Equity Interest In Subsidiary Earnings TemporaryEquityInterestInSubsidiaryEarnings	527000	USD
	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	2840000	USD
CY2019Q2	us-gaap	Redeemable Noncontrolling Interest Equity Common Carrying Amount RedeemableNoncontrollingInterestEquityCommonCarryingAmount	12509000	USD
	us-gaap	Payment For Contingent Consideration Liability Investing Activities PaymentForContingentConsiderationLiabilityInvestingActivities	1800000	USD
	us-gaap	Temporary Equity Interest In Subsidiary Earnings TemporaryEquityInterestInSubsidiaryEarnings	500000	USD
CY2019Q2	us-gaap	Business Combination Contingent Consideration Arrangements Range Of Outcomes Value Low BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueLow	1900000	USD
CY2019Q2	us-gaap	Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh	3500000	USD
CY2019Q2	us-gaap	Inventory Real Estate Land And Land Development Costs InventoryRealEstateLandAndLandDevelopmentCosts	415561000	USD
CY2019Q2	us-gaap	Variable Interest Entity Consolidated Assets Pledged VariableInterestEntityConsolidatedAssetsPledged	82600000	USD
CY2018Q4	us-gaap	Variable Interest Entity Consolidated Assets Pledged VariableInterestEntityConsolidatedAssetsPledged	76300000	USD
CY2019Q2	grbk	Finished Homesand Homesunder Construction FinishedHomesandHomesunderConstruction	303924000	USD
CY2018Q4	grbk	Finished Homesand Homesunder Construction FinishedHomesandHomesunderConstruction	268763000	USD
CY2018Q4	us-gaap	Inventory Real Estate Land And Land Development Costs InventoryRealEstateLandAndLandDevelopmentCosts	399809000	USD
CY2019Q2	us-gaap	Inventory Land Held For Sale InventoryLandHeldForSale	393000	USD
CY2018Q4	us-gaap	Inventory Land Held For Sale InventoryLandHeldForSale	389000	USD
CY2019Q2	us-gaap	Inventory Real Estate InventoryRealEstate	719878000	USD
CY2018Q4	us-gaap	Inventory Real Estate InventoryRealEstate	668961000	USD
CY2019Q1	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	16526000	USD
CY2018Q1	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	11221000	USD
CY2018Q4	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	14780000	USD
CY2017Q4	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	10474000	USD
CY2019Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs Incurred RealEstateInventoryCapitalizedInterestCostsIncurred	3128000	USD
CY2018Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs Incurred RealEstateInventoryCapitalizedInterestCostsIncurred	2006000	USD
	us-gaap	Real Estate Inventory Capitalized Interest Costs Incurred RealEstateInventoryCapitalizedInterestCostsIncurred	6014000	USD
	us-gaap	Real Estate Inventory Capitalized Interest Costs Incurred RealEstateInventoryCapitalizedInterestCostsIncurred	3634000	USD
CY2019Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs Cost Of Sales1 RealEstateInventoryCapitalizedInterestCostsCostOfSales1	2455000	USD
CY2018Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs Cost Of Sales1 RealEstateInventoryCapitalizedInterestCostsCostOfSales1	1084000	USD
	us-gaap	Real Estate Inventory Capitalized Interest Costs Cost Of Sales1 RealEstateInventoryCapitalizedInterestCostsCostOfSales1	3595000	USD
	us-gaap	Real Estate Inventory Capitalized Interest Costs Cost Of Sales1 RealEstateInventoryCapitalizedInterestCostsCostOfSales1	1965000	USD
CY2019Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	17199000	USD
CY2018Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	12143000	USD
CY2019Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	17199000	USD
CY2018Q2	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	12143000	USD
CY2019Q2	grbk	Inventory Operative Builders With Potential Indicators Of Impairment InventoryOperativeBuildersWithPotentialIndicatorsOfImpairment	14700000
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Cash EquityMethodInvestmentSummarizedFinancialInformationCash	9260000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Cash EquityMethodInvestmentSummarizedFinancialInformationCash	14584000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Accounts Receivable EquityMethodInvestmentSummarizedFinancialInformationAccountsReceivable	3525000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Accounts Receivable EquityMethodInvestmentSummarizedFinancialInformationAccountsReceivable	1259000	USD
CY2019Q2	grbk	Equity Method Investments Summarized Financial Information Bonds Receivable EquityMethodInvestmentsSummarizedFinancialInformationBondsReceivable	5864000	USD
CY2018Q4	grbk	Equity Method Investments Summarized Financial Information Bonds Receivable EquityMethodInvestmentsSummarizedFinancialInformationBondsReceivable	5864000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Loans Held For Sale EquityMethodInvestmentSummarizedFinancialInformationLoansHeldForSale	8266000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Loans Held For Sale EquityMethodInvestmentSummarizedFinancialInformationLoansHeldForSale	3083000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Inventory EquityMethodInvestmentSummarizedFinancialInformationInventory	51291000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Inventory EquityMethodInvestmentSummarizedFinancialInformationInventory	44375000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Other Assets EquityMethodInvestmentSummarizedFinancialInformationOtherAssets	4390000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Other Assets EquityMethodInvestmentSummarizedFinancialInformationOtherAssets	3132000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	82596000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	72297000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Accounts Payable EquityMethodInvestmentSummarizedFinancialInformationAccountsPayable	3247000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Accounts Payable EquityMethodInvestmentSummarizedFinancialInformationAccountsPayable	2173000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Accrued Expensesand Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationAccruedExpensesandOtherLiabilities	8086000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Accrued Expensesand Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationAccruedExpensesandOtherLiabilities	5328000	USD
CY2019Q2	grbk	Equity Method Investment Summarized Financial Information Notes Payable EquityMethodInvestmentSummarizedFinancialInformationNotesPayable	33991000	USD
CY2018Q4	grbk	Equity Method Investment Summarized Financial Information Notes Payable EquityMethodInvestmentSummarizedFinancialInformationNotesPayable	31402000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	45324000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	38903000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	18582000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	15653000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Equity Or Capital EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital	18690000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity Or Capital EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital	17741000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	37272000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	33394000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	82596000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	72297000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	43261000	USD
CY2018Q2	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	43953000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.14
	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	74358000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	76952000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	37804000	USD
CY2018Q2	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	39099000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	65121000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	69020000	USD
CY2019Q2	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	5457000	USD
CY2018Q2	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	4854000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	9237000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	7932000	USD
CY2019Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2697000	USD
CY2018Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2279000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4543000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3815000	USD
CY2019Q2	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1343000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1614000	USD
CY2019Q2	us-gaap	Line Of Credit LineOfCredit	232657000	USD
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	200386000	USD
CY2019Q2	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	73100000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	7862	shares
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	100000	USD
CY2019Q2	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	39320	shares
CY2019Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	300000	USD
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	59116	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	34000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	12.00
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	219000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	194000	shares
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y3M29D
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	410000	USD
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	400000	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	7.49
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y3M29D
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	500000	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.49
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	9.67
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	0
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	59000	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	9.05
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	500000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.49
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2019Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	328000	USD
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	100000	shares
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	2.88
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	0	shares
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	0	shares
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue	0
CY2019Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	100000	shares
CY2019Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	2.88
CY2019Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	200000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1800000	USD
CY2018Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	200000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1400000	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0.0	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	400000	USD
CY2018Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0.0	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	300000	USD
CY2019Q2	us-gaap	Customer Advances And Deposits CustomerAdvancesAndDeposits	31578000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	11522000	USD
CY2018Q4	us-gaap	Customer Advances And Deposits CustomerAdvancesAndDeposits	31978000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	8037000	USD
CY2018Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	5428000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	7252000	USD
	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	0	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	60100000	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	21410000	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	27871000	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	10865000	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	60146000	USD
CY2019Q2	us-gaap	Revenues Revenues	183506000	USD
CY2018Q2	us-gaap	Revenues Revenues	157312000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	40281000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	41071000	USD
	us-gaap	Gross Profit GrossProfit	75647000	USD
	us-gaap	Gross Profit GrossProfit	73705000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	21456000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	24230000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	36775000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	40841000	USD
CY2019Q2	us-gaap	Inventory Real Estate InventoryRealEstate	719878000	USD
CY2018Q4	us-gaap	Inventory Real Estate InventoryRealEstate	668961000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14460000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	14869000	USD
	us-gaap	Net Income Loss NetIncomeLoss	27065000	USD
	us-gaap	Net Income Loss NetIncomeLoss	26072000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50655000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50664000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50609000	shares
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50620000	shares
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
	us-gaap	Payment For Contingent Consideration Liability Operating Activities PaymentForContingentConsiderationLiabilityOperatingActivities	1332000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50655000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50664000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50609000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50620000	shares
CY2019Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	69000	shares
CY2018Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	119000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	56000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	131000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50724000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50783000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50665000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50751000	shares
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2019Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	35000	shares
CY2018Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	9000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	28000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	19000	shares
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2207000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2207000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	514000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	514000	USD
	us-gaap	Payment For Contingent Consideration Liability Operating Activities PaymentForContingentConsiderationLiabilityOperatingActivities	1332000	USD
CY2019Q2	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	618000	USD
CY2019Q2	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	618000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet	0	USD
CY2019Q2	grbk	Lots Remaining To Be Sold LotsRemainingToBeSold	0
CY2019Q2	grbk	Landand Lotsunder Purchase Options Expected Purchase Payments Year Four LandandLotsunderPurchaseOptionsExpectedPurchasePaymentsYearFour	3739000	USD
CY2019Q2	grbk	Landand Lotsunder Purchase Options Expected Purchase Payments Total LandandLotsunderPurchaseOptionsExpectedPurchasePaymentsTotal	184662000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	257000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	257000	USD
CY2019Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2000000.0	USD
CY2018Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2200000	USD
CY2019Q2	us-gaap	Operating Lease Expense OperatingLeaseExpense	300000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	600000	USD
CY2019Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	300000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	600000	USD
CY2019Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y8M12D
CY2019Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0525
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	599000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1235000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1011000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	734000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	558000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	4137000	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	3751000	USD
CY2019Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	100000	USD
CY2019Q2	grbk	Lotsunder Purchase Options Number LotsunderPurchaseOptionsNumber	3050	lot
CY2018Q4	grbk	Lotsunder Purchase Options Number LotsunderPurchaseOptionsNumber	1843	lot
CY2019Q2	grbk	Landand Lotsunder Purchase Options Expected Purchase Payments Remainderof Fiscal Year LandandLotsunderPurchaseOptionsExpectedPurchasePaymentsRemainderofFiscalYear	73528000	USD
CY2019Q2	grbk	Landand Lotsunder Purchase Options Expected Purchase Payments Year Two LandandLotsunderPurchaseOptionsExpectedPurchasePaymentsYearTwo	76120000	USD
CY2019Q2	grbk	Landand Lotsunder Purchase Options Expected Purchase Payments Year Three LandandLotsunderPurchaseOptionsExpectedPurchasePaymentsYearThree	31275000	USD
CY2019Q2	grbk	Earnest Money Depositsand Preacquisition Costs Written Off EarnestMoneyDepositsandPreacquisitionCostsWrittenOff	0.0	USD
	grbk	Earnest Money Depositsand Preacquisition Costs Written Off EarnestMoneyDepositsandPreacquisitionCostsWrittenOff	500000	USD
CY2018Q2	grbk	Earnest Money Depositsand Preacquisition Costs Written Off EarnestMoneyDepositsandPreacquisitionCostsWrittenOff	0.0	USD
	grbk	Earnest Money Depositsand Preacquisition Costs Written Off EarnestMoneyDepositsandPreacquisitionCostsWrittenOff	100000	USD

Files In Submission

Name	View Source	Status
0001628280-19-010464-index-headers.html	Edgar Link	pending
0001628280-19-010464-index.html	Edgar Link	pending
0001628280-19-010464.txt	Edgar Link	pending
0001628280-19-010464-xbrl.zip	Edgar Link	pending
a0630201910-q.htm	Edgar Link	pending
a0630201910-q_htm.xml	Edgar Link	completed
exhibit311certificatio.htm	Edgar Link	pending
exhibit312certificatio.htm	Edgar Link	pending
exhibit321certificatio.htm	Edgar Link	pending
exhibit322certificatio.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
grbk-20190630.xsd	Edgar Link	pending
grbk-20190630_cal.xml	Edgar Link	unprocessable
grbk-20190630_def.xml	Edgar Link	unprocessable
grbk-20190630_lab.xml	Edgar Link	unprocessable
grbk-20190630_pre.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$GRBK
Green Brick Partners, Inc. Stock $grbk

2019 Q2 Form 10-Q Financial Statement

#000162828019010464 Filed on August 08, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GRBK Green Brick Partners, Inc. Stock $grbk

2019 Q2 Form 10-Q Financial Statement

#000162828019010464 Filed on August 08, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GRBK
Green Brick Partners, Inc. Stock $grbk