Loans - Evaluation of Quality of Loan Portfolio (Detail) - Credit Concentration Risk [Member] - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
---|---|---|---|
Gaming [Member] | |||
Financing Receivable, Recorded Investment [Line Items] | |||
Total outstanding concentrations | $ 31,655 | $ 31,353 | $ 29,570 |
Hotel/Motel [Member] | |||
Financing Receivable, Recorded Investment [Line Items] | |||
Total outstanding concentrations | 39,460 | 47,144 | 49,842 |
Out of Area [Member] | |||
Financing Receivable, Recorded Investment [Line Items] | |||
Total outstanding concentrations | $ 14,526 | $ 19,179 | $ 24,945 |