Loans (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 254	$ 437
Collectively evaluated for impairment	25,669	24,945
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	25,923	25,382
Loans:
Loans individually evaluated for impairment	33,138	42,049
Loans collectively evaluated for impairment	1,898,561	1,765,317
Loans acquired with deteriorated credit quality	156	169
Total ending loans balance	1,931,855	1,807,535
One to Four Family Residential Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	101	201
Collectively evaluated for impairment	2,331	3,011
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	2,432	3,212
Loans:
Loans individually evaluated for impairment	6,767	7,574
Loans collectively evaluated for impairment	202,600	198,106
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	209,367	205,680
Multi Family Residential Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	1	0
Collectively evaluated for impairment	2,179	2,151
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	2,180	2,151
Loans:
Loans individually evaluated for impairment	3,580	3,313
Loans collectively evaluated for impairment	196,409	164,382
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	199,989	167,695
Commercial Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	89	139
Collectively evaluated for impairment	10,518	11,633
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	10,607	11,772
Loans:
Loans individually evaluated for impairment	16,885	23,493
Loans collectively evaluated for impairment	829,692	759,281
Loans acquired with deteriorated credit quality	144	153
Total ending loans balance	846,721	782,927
Construction Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	412	517
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	412	517
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	82,254	96,845
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	82,254	96,845
Commercial Loan [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	24	63
Collectively evaluated for impairment	7,855	5,192
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	7,879	5,255
Loans:
Loans individually evaluated for impairment	4,416	6,107
Loans collectively evaluated for impairment	453,130	414,527
Loans acquired with deteriorated credit quality	12	16
Total ending loans balance	457,558	420,650
Home Equity and Home Improvement [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	39	34
Collectively evaluated for impairment	2,158	2,270
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	2,197	2,304
Loans:
Loans individually evaluated for impairment	1,424	1,491
Loans collectively evaluated for impairment	117,290	115,977
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	118,714	117,468
Consumer Finance [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	216	171
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	216	171
Loans:
Loans individually evaluated for impairment	66	71
Loans collectively evaluated for impairment	17,186	16,199
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	$ 17,252	$ 16,270