DEFINED BENEFIT PENSION PLAN (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) item	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Defined Benefit Pension Plan
Expected contributions to the plan	$ 19,000
Number of years over which anticipated pension distributions disclosed | item	5
Anticipated distributions from the plan
2017	$ 128,000
2018	125,000
2019	122,000
2020	121,000
2021	120,000
2022-2026	723,000
Total	1,339,000
Peninsula Financial Corporation noncontributory defined benefit pension plan
Change in benefit obligation:
Benefit obligation, beginning of year	3,180,000	$ 3,290,000
Interest cost	187,000	24,000
Actuarial loss	(44,000)
Benefits paid	(136,000)	(134,000)
Benefit obligation at end of year	3,187,000	3,180,000
Change in plan assets
Actual return on plan assets	103,000	(8,000)
Employer contributions	49,000	68,000
Benefits paid	(136,000)	(134,000)
Funded status	(1,138,000)	(1,147,000)
Fair value of plan assets	$ 2,049,000	$ 2,033,000	$ 2,107,000
Assumptions in the actuarial valuation
Weighted average discount rate	3.78%	3.99%
Expected long-term rate of return on plan assets	8.00%	8.00%
Peninsula Financial Corporation noncontributory defined benefit pension plan | Equity securities | Plan
Plan assets
Target Allocation, minimum	50.00%
Target Allocation, maximum	70.00%
Actual Allocation	60.00%
Peninsula Financial Corporation noncontributory defined benefit pension plan | Fixed income securities | Plan
Plan assets
Target Allocation, minimum	30.00%
Target Allocation, maximum	50.00%
Actual Allocation	40.00%