Regulatory Matters - Schedule of Capital Ratios and Capital Amounts Compliance with Regulatory Framework for Adequately Capitalized and Well Capitalized Institutions, by Company and its Subsidiary Bank (Detail) - Progressive Bank N.A. [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 33,654	$ 32,700
Tier I Capital (to Risk Weighted Assets), Actual, Amount	31,896	30,887
Common Equity Tier I Capital (to Risk Weighted Assets)	31,896
Tier I Capital (to Adjusted Total Assets), Actual, Amount	$ 31,896	$ 30,887
Total Capital (to Risk Weighted Assets), Actual, Ratio	22.26%	21.29%
Tier I Capital (to Risk Weighted Assets), Actual, Ratio	21.09%	20.11%
Common Equity Tier I Capital (to Risk Weighted Assets)	21.09%
Tier I Capital (to Adjusted Total Assets), Actual, Ratio	9.61%	9.30%
Total Capital (to Risk Weighted Assets) Required For Capital Adequacy Purposes, Amount	$ 12,097	$ 12,290
Tier I Capital (to Risk Weighted Assets) Required For Capital Adequacy Purposes, Amount	9,072	6,145
Common Equity Tier I Capital (to Risk Weighted Assets)	6,804
Tier I Capital (to Adjusted Total Assets) Required For Capital Adequacy Purposes, Amount	$ 13,278	$ 13,280
Total Capital (to Risk Weighted Assets) Required For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Tier I Capital (to Risk Weighted Assets) Required For Capital Adequacy Purposes, Ratio	6.00%	4.00%
Common Equity Tier I Capital (to Risk Weighted Assets)	4.50%
Tier I Capital (to Adjusted Total Assets) Required For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Total Capital (to Risk Weighted Assets) Required To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 15,121	$ 15,362
Tier I Capital (to Risk Weighted Assets) Required To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	12,097	9,217
Common Equity Tier I Capital (to Risk Weighted Assets)	9,829
Tier I Capital (to Adjusted Total Assets) Required To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 16,598	$ 16,600
Total Capital (to Risk Weighted Assets) Required To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets) Required To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	6.00%
Common Equity Tier I Capital (to Risk Weighted Assets)	6.50%
Tier I Capital (to Adjusted Total Assets) Required To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%

FIRST WEST VIRGINIA BANCORP INC 10-Q