CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Beginning Balance at Dec. 31, 2016	$ 236	$ 37,019	$ 70,067	$ (61)	$ 107,261
Beginning Balance (in shares) at Dec. 31, 2016	23,642,510
Stockholders' Equity
Net income			31,897		31,897
Stock based compensation expense		718			718
Vesting of restricted stock	$ 2	(2)
Vesting of restricted stock (in shares)	172,372
Stock option exercise	$ 2	683			685
Stock option exercise (in shares)	260,000
Other comprehensive income (loss)				(7)	(7)
Dividends on common stock			(5,439)		(5,439)
Ending Balance at Dec. 31, 2017	$ 240	38,418	96,525	(68)	135,115
Ending Balance (in shares) at Dec. 31, 2017	24,074,882
Stockholders' Equity
Net income			41,334		41,334
Stock based compensation expense		1,499			1,499
Vesting of restricted stock	$ 2	(2)
Vesting of restricted stock (in shares)	183,180
Impact of adoption of new accounting standard | 2018-02			(13)	13
Other comprehensive income (loss)				(49)	(49)
Dividends on common stock			(9,291)		(9,291)
Ending Balance at Dec. 31, 2018	$ 242	39,915	128,555	(104)	168,608
Ending Balance (in shares) at Dec. 31, 2018	24,258,062
Stockholders' Equity
Net income			44,718		44,718
Stock based compensation expense		1,526			1,526
Vesting of restricted stock	$ 2	(2)
Vesting of restricted stock (in shares)	157,316
Repurchase and retirement of common stock	$ (1)	(1,484)			(1,485)
Repurchase and retirement of common stock (in shares)	(110,000)
Issuance of common stock through IPO, net of expenses of $1.6 million	$ 12	13,899			13,911
Issuance of common stock through IPO, net of expenses of $1.6 million (in shares)	1,224,513
Impact of adoption of new accounting standard | 2016-02			(255)		(255)
Other comprehensive income (loss)				103	103
Dividends on common stock			(10,402)		(10,402)
Ending Balance at Dec. 31, 2019	$ 255	$ 53,854	$ 162,616	$ (1)	$ 216,724
Ending Balance (in shares) at Dec. 31, 2019	25,529,891