2.2.0.7 false CONSOLIDATED CONDENSED STATEMENTS OF INCOME (Parenthetical) (USD $) 0015 - Statement - CONSOLIDATED CONDENSED STATEMENTS OF INCOME (Parenthetical) true false In Thousands false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 CONSOLIDATED CONDENSED STATEMENTS OF INCOME 0 us-gaap_IncomeStatementAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Benefits and settlement expenses, reinsurance ceded 1 us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 true true false false 308594000 308594 false false false 2 true true false false 308979000 308979 false false false 3 true true false false 971061000 971061 false false false 4 true true false false 1014907000 1014907 false false false xbrli:monetaryItemType monetary The reduction in the amount of the provision for the period for claims and benefits incurred on contract risks ceded to other insurers under reinsurance arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 113 -Paragraph 27, 113 false 4 Other operating expenses, reinsurance ceded 1 pl_OtherOperatingExpensesReinsuranceCeded pl false credit duration The reduction in other operating expenses from contracts that were ceded. false false false false false false false false false false false terselabel false 1 true true false false 48851000 48851 false false false 2 true true false false 54791000 54791 false false false 3 true true false false 142932000 142932 false false false 4 true true false false 161819000 161819 false false false xbrli:monetaryItemType monetary The reduction in other operating expenses from contracts that were ceded. No authoritative reference available. false 4 3 false Thousands UnKnown UnKnown false true