Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) |
Oct. 03, 2014 |
Sep. 23, 2011 |
May. 28, 2010 |
---|---|---|---|
North Valley Bancorp [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Additions to core deposit intangibles | $ 6,614,000 | ||
Citizens [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Additions to core deposit intangibles | $ 898,000 | ||
Granite [Member] | |||
Finite-Lived Intangible Assets [Line Items] | |||
Additions to core deposit intangibles | $ 562,000 |