XML 25 R91.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Statutory Net Income, Capital and Surplus and Dividend Restrictions - Statutory Net Income, Capital and Surplus and Dividend (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | $ 418,449,596 | $ 364,518,536 | $ 407,125,532
Statutory net income (loss) | 44,680,696 | (33,246,417) | 1,677,549
Atlantic States [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | 259,030,868 | 230,736,313 | 260,428,754
Statutory unassigned (deficit) surplus | 155,909,822 | 140,713,118 | 172,709,955
Statutory net income (loss) | 22,282,231 | (23,458,516) | (2,037,672)
Southern [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | 54,405,568 | 45,355,785 | 54,503,581
Statutory unassigned (deficit) surplus | (2,375,794) | (6,346,270) | 2,914,532
Statutory net income (loss) | 5,061,477 | (9,822,457) | (3,375,434)
Peninsula [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | 39,244,570 | 32,717,996 | 39,396,818
Statutory unassigned (deficit) surplus | 20,936,805 | 14,415,949 | 21,148,253
Statutory net income (loss) | 7,360,378 | (6,316,130) | (841,119)
MICO [Member] |  |  |
Statutory Accounting Practices [Line Items] |  |  |
Statutory capital and surplus | 65,768,590 | 55,708,442 | 52,796,379
Statutory unassigned (deficit) surplus | 38,910,008 | 28,949,919 | 26,162,540
Statutory net income (loss) | $ 9,976,610 | $ 6,350,686 | $ 7,931,774

X
- Definition Statutory unassigned (deficit) surplus. + References No definition available. + Details
Name: | dgica_StatutoryAccountingPracticesStatutoryUnassignedDeficitSurplus
Namespace Prefix: | dgica_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_StatutoryAccountingPracticesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 + Details
Name: | us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
Name: | us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=dgica_AtlanticStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=dgica_SouthernMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=dgica_PeninsulaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=dgica_MichiganInsuranceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |