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Network
1158 - Disclosure - Fair Value Measurements - Additional Information about Assets Measured at Fair Value on Recurring Basis (Detail)
(http://fnbcorporation.com/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformationAboutAssetsMeasuredAtFairValueOnRecurringBasis)
TableFair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000037808 (http://www.sec.gov/CIK)
Measurement Frequency [Axis]Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Asset Class [Axis]Asset Class [Axis]
Equity Securities [Member]Residential Non-Agency Collateralized Mortgage Obligations [Member]Asset Class [Domain]Equity Securities [Member]Residential Non-Agency Collateralized Mortgage Obligations [Member]Asset Class [Domain]
Balance at beginning of period
439,000  
1,184,000  
1,623,000  
475,000  
1,420,000  
1,895,000  
Total gains (losses) - realized/unrealized, Included in earnings
0  
0  
0  
0  
0  
0  
Total gains (losses) - realized/unrealized, Included in other comprehensive income
53,000  
(7,000) 
46,000  
20,000  
(4,000) 
16,000  
Accretion included in earnings
 
6,000  
6,000  
 
5,000  
5,000  
Purchases
0  
0  
0  
0  
0  
0  
Issuances
0  
0  
0  
0  
0  
0  
Sales/redemptions
0  
0  
0  
0  
0  
0  
Settlements
 
(289,000) 
(289,000) 
 
(237,000) 
(237,000) 
Transfers from Level 3
   
(56,000) 
 
(56,000) 
Transfers into Level 3
0  
0  
0  
0  
0  
0  
Balance at end of period
492,000  
 
894,000  
 
1,386,000  
 
439,000  
 
1,184,000  
 
1,623,000