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Deferred income tax assets and liabilities, net (Details Narrative) - PEN (S/)
S/ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]            
Applicable tax rate 26.00% 27.00% 29.50% 28.00% 28.00% 30.00%
Other tax rate effects for reconciliation between accounting profit and tax expense (income)     37.00% 39.00% 29.00%  
Increased in deferred income tax liability       S/ 22,344 S/ 2,646  
Increased in deferred income tax assets       8,529    
Higher income tax expense       14,639    
Total other comprehensive income     S/ 11,339 S/ 11,039 S/ (4,019)  
Percentage of offset future annual taxable profits       50.00%    
Deferred tax expense (income) unrecognised increase profit or loss     858 S/ 2,843    
Deferred tax liabilities     108,823 139,752    
Temporary Differences [Member]            
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]            
Deferred tax liabilities     S/ 70,365 S/ 57,615