FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, net of tax	Unearned ESOP Shares
Balances at beginning of period - shares at Dec. 31, 2017		10,748,437
Balances at beginning of period - amount at Dec. 31, 2017	$ 142,634	$ 107	$ 94,173	$ 54,642	$ (928)	$ (5,360)
Increase (Decrease) in Stockholders' Equity
Total other comprehensive income, net of tax - amount	13,574
Cash dividends declared and paid				(3,198)
Net income	14,899			14,899
Other comprehensive income	$ (1,325)				(1,325)
Exercise of stock options - shares	137,940
Exercise of stock options - amount	$ 1,365	1	1,364
Repurchase and retirement of common stock (shares)	(203,900)
Repurchase and retirement of common stock	$ (3,153)	(2)	(3,151)
Allocation of ESOP shares	$ 1,906		778			1,128
Issuance of common stock - restricted stock awards, net	30,179
Issuance of common stock - restricted stock awards, net	$ (40)	$ (1)	41
Stock compensation expense	$ 650		650
Canceled common stock - restricted stock awards	(2,000)
Canceled common stock - restricted stock awards	$ 0
Cash dividends declared and paid	$ 3,198
Balances at end of period - shares at Dec. 31, 2018	10,710,656	10,710,656
Balances at end of period - amount at Dec. 31, 2018	$ 153,738	$ 107	93,773	66,343	(2,253)	(4,232)
Increase (Decrease) in Stockholders' Equity
Total other comprehensive income, net of tax - amount	11,251
Cash dividends declared and paid				(3,478)
Net income	10,369			10,369
Other comprehensive income	$ 882				882
Exercise of stock options - shares	2,000
Exercise of stock options - amount	$ 21		21
Repurchase and retirement of common stock (shares)	(479,052)
Repurchase and retirement of common stock	$ (7,406)	$ (4)	(7,402)
Allocation of ESOP shares	$ 1,698		570			1,128
Issuance of common stock - restricted stock awards, net	25,278
Issuance of common stock - restricted stock awards, net	$ (93)		93
Stock compensation expense	$ 501		501
Canceled common stock - restricted stock awards	(5,929)
Canceled common stock - restricted stock awards	$ 0
Cash dividends declared and paid	3,478
Beginning balance adjustment from adoption of Topic 842	$ 87			87
Balances at end of period - shares at Dec. 31, 2019	10,252,953	10,252,953
Balances at end of period - amount at Dec. 31, 2019	$ 156,319	$ 103	$ 87,370	$ 73,321	$ (1,371)	$ (3,104)