XML 82 R63.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Investments - Net Effect on Stockholders' Equity of Unrealized Gains and Losses on AFS Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] |  |  |
Net unrealized investment gains on available-for-sale securities including OTTI, Available-for-sale securities | $ (9,187) | $ 60,292 | [1]
OTTI | 147 | 174 |
Net unrealized investment gains on available-for-sale securities excluding OTTI | (9,040) | 60,466 |
Less deferred income taxes | 1,787 | (20,780) |
Net unrealized investment gains on available-for-sale securities excluding OTTI, net of tax | $ (7,253) | $ 39,686 |
[1] | Includes $9.8 million of net unrealized gains for equity securities recognized in accumulated other comprehensive income (loss) prior to the adoption of ASU 2016-01.

X
- Definition Accumulated other comprehensive income loss available for sale securities adjustment before tax adjustment. + References No definition available. + Details
Name: | pri_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTaxAdjustment
Namespace Prefix: | pri_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Accumulated other comprehensive income (loss), available-for-sale securities adjustment, before tax, including other than temporary impairment. + References No definition available. + Details
Name: | pri_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTaxIncludingOtherThanTemporaryImpairment
Namespace Prefix: | pri_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Accumulated other comprehensive income loss available for sale securities adjustment tax. + References No definition available. + Details
Name: | pri_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentTax
Namespace Prefix: | pri_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Accumulated other comprehensive income loss other than temporary impairment not credit loss before tax available for sale debt securities. + References No definition available. + Details
Name: | pri_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossBeforeTaxAvailableForSaleDebtSecurities
Namespace Prefix: | pri_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Accumulated unrealized gain (loss), after tax, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e681-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 + Details
Name: | us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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