Note 4 - Loans and Allowance for Loan Losses - Credit Risk Profile (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Total loans	$ 328,547	$ 336,314	$ 346,180
Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	32,185	35,389	38,088
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans	3,567	4,031	4,622
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans	52,896	54,827	59,823
Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	11,075	11,547	12,197
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	202,513	195,924	198,480
Commercial Portfolio Segment [Member]
Total loans	14,850	20,047	19,135
Consumer Portfolio Segment [Member]
Total loans	1,044	1,074	1,071
Construction Portfolio Segment [Member]
Total loans	10,417	13,475	$ 12,764
Pass [Member]
Total loans	299,535	300,114
Pass [Member] \| Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	30,888	33,787
Pass [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans	3,567	4,031
Pass [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans	49,741	48,241
Pass [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	9,932	9,631
Pass [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	181,794	173,375
Pass [Member] \| Commercial Portfolio Segment [Member]
Total loans	12,152	16,500
Pass [Member] \| Consumer Portfolio Segment [Member]
Total loans	1,044	1,074
Pass [Member] \| Construction Portfolio Segment [Member]
Total loans	10,417	13,475
Pass Closely Monitored [Member]
Total loans	19,213	22,938
Pass Closely Monitored [Member] \| Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	331	490
Pass Closely Monitored [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans	0	0
Pass Closely Monitored [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans	3,155	6,586
Pass Closely Monitored [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	801	855
Pass Closely Monitored [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	14,438	14,349
Pass Closely Monitored [Member] \| Commercial Portfolio Segment [Member]
Total loans	488	658
Pass Closely Monitored [Member] \| Consumer Portfolio Segment [Member]
Total loans
Pass Closely Monitored [Member] \| Construction Portfolio Segment [Member]
Total loans
Special Mention [Member]
Total loans	3,696	5,760
Special Mention [Member] \| Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	239	241
Special Mention [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans	0	0
Special Mention [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans	0	0
Special Mention [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	0	0
Special Mention [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	1,247	2,630
Special Mention [Member] \| Commercial Portfolio Segment [Member]
Total loans	2,210	2,889
Special Mention [Member] \| Consumer Portfolio Segment [Member]
Total loans	0	0
Special Mention [Member] \| Construction Portfolio Segment [Member]
Total loans		0
Substandard [Member]
Total loans	6,103	7,502
Substandard [Member] \| Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	727	871
Substandard [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans		0
Substandard [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans
Substandard [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	342	1,061
Substandard [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	5,034	5,570
Substandard [Member] \| Commercial Portfolio Segment [Member]
Total loans
Substandard [Member] \| Consumer Portfolio Segment [Member]
Total loans	0	0
Substandard [Member] \| Construction Portfolio Segment [Member]
Total loans	0
Doubtful [Member]
Total loans	0	0
Doubtful [Member] \| Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	0	0
Doubtful [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans	0	0
Doubtful [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans	0	0
Doubtful [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	0	0
Doubtful [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	0	0
Doubtful [Member] \| Commercial Portfolio Segment [Member]
Total loans	0	0
Doubtful [Member] \| Consumer Portfolio Segment [Member]
Total loans	0	0
Doubtful [Member] \| Construction Portfolio Segment [Member]
Total loans	0	0
Loss [Member]
Total loans	0	0
Loss [Member] \| Residential Portfolio Segment [Member] \| One- to Four-family [Member]
Total loans	0	0
Loss [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Total loans	0	0
Loss [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Total loans	0	0
Loss [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Land Loan [Member]
Total loans	0	0
Loss [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Total loans	0	0
Loss [Member] \| Commercial Portfolio Segment [Member]
Total loans	0	0
Loss [Member] \| Consumer Portfolio Segment [Member]
Total loans	0	0
Loss [Member] \| Construction Portfolio Segment [Member]
Total loans	$ 0	$ 0

Wolverine Bancorp, Inc. 10-Q