Condensed Financial Statements of Parent Company - Balance Sheets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
ASSETS        
Cash and cash equivalents $ 67,938 $ 42,349 $ 47,702 $ 94,406
Available for sale, at fair value 335,609 332,736    
Other assets 5,866 6,191    
Total assets 1,665,981 1,555,982    
LIABILITIES AND SHAREHOLDERS’ EQUITY        
Other liabilities 8,886 9,871    
Shareholders' equity 228,517 209,408 157,659 143,672
Total liabilities and shareholders’ equity 1,665,981 1,555,982    
People’s Utah Bancorp, Inc.        
ASSETS        
Cash and cash equivalents 2,946 2,637 $ 3,491 $ 839
Available for sale, at fair value 34,507 34,796    
Investment in subsidiaries 192,578 172,460    
Other assets 391 489    
Total assets 230,422 210,382    
LIABILITIES AND SHAREHOLDERS’ EQUITY        
Due to subsidiaries, net 1,411 257    
Other liabilities 494 717    
Shareholders' equity 228,517 209,408    
Total liabilities and shareholders’ equity $ 230,422 $ 210,382