Benefit Plans Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details)
|
12 Months Ended |
|
Dec. 31, 2015
USD ($)
$ / shares
shares
|
Dec. 31, 2014
USD ($)
$ / shares
shares
|
Dec. 31, 2013
$ / shares
shares
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |
|
|
|
| Exercised |
(125,000)
|
(369,275)
|
(314,989)
|
| First Financial Northwest, Inc. 2008 Equity Incentive Plan | Stock Options |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |
|
|
|
| Outstanding at beginning balance |
929,260
|
|
|
| Granted |
80,000
|
|
|
| Exercised |
(125,000)
|
|
|
| Outstanding at ending balance |
884,260
|
929,260
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |
|
|
|
| Outstanding beginning balance, Weighted Average Exercise Price | $ / shares |
$ 9.51
|
|
|
| Granted | $ / shares |
12.98
|
|
|
| Exercised | $ / shares |
7.48
|
|
|
| Outstanding ending balance, Weighted Average Exercise Price | $ / shares |
$ 10.11
|
$ 9.51
|
|
| Share-based Compensations Arrangement by Share-based Payment Award, Options Outstanding, Weighted Average Remaining Contractual Term [Roll Forward] |
|
|
|
| Outstanding ending balance, Weighted Average Remaining Contractual Term |
4 years 11 months 5 days
|
|
|
| Share Based Compensation, Stock Option Plan, Additional Disclosures [Abstract] |
|
|
|
| Outstanding beginning balance, Agregate Intrinsic Value | $ |
$ 0
|
|
|
| Exercised | $ |
0
|
|
|
| Outstanding ending balance, Agregate Intrinsic Value | $ |
$ 3,403,707
|
$ 0
|
|
| Expected to Vest, Shares |
876,400
|
|
|
| Expected to Vest, Weighted Average Exercise Price | $ / shares |
$ 10.10
|
|
|
| Expected to Vest, Weighted Average Remaining Contracutal Term in Years |
4 years 10 months 24 days
|
|
|
| Expected to Vest, Aggregate Intrinsic Value | $ |
$ 3,380,786
|
|
|
| Exercisable ending balance, Shares |
622,260
|
|
|
| Exercisable ending balance, Weighted Average Exercise Price |
9.72
|
|
|
| Exercisable ending balance, Weighted Average Remaining Contracutal Term in Years |
3 years 5 months 16 days
|
|
|
| Exercisable ending balance, Aggregate Intrinsic Value | $ |
$ 2,639,687
|
|
|
| First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
|
| Nonvested beginning balance, Shares |
75,600
|
103,400
|
244,847
|
| Granted, Shares |
|
|
25,000
|
| Vested, Shares |
(27,800)
|
(27,800)
|
(156,047)
|
| Forfeited, Shares |
|
|
(10,400)
|
| Nonvested ending balance, Shares |
47,800
|
75,600
|
103,400
|
| Expected to vest assuming a 3% forfeiture rate over the vesting term, Shares |
46,366
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] |
|
|
|
| Nonvested beginning balance, Weighted-Average Grant Date Fair Value | $ / shares |
$ 8.47
|
$ 8.24
|
$ 8.95
|
| Granted, Weighted-Average Grant Date Fair Value | $ / shares |
|
|
10.88
|
| Vested, Weighted-Average Grant Date Fair Value | $ / shares |
7.64
|
7.64
|
9.72
|
| Forfeited, Weighted-Average Grant Date Fair Value | $ / shares |
|
|
9.12
|
| Nonvested ending balance, Weighted-Average Grant Date Fair Value | $ / shares |
$ 8.95
|
$ 8.47
|
$ 8.24
|