UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Contributed Capital	Retained Earnings
Beginning balance at Dec. 31, 2018	$ 146,598	$ 422	$ 11,948	$ 134,228
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (losses) earnings	4,908			4,908
Stock-based compensation expense	123		123
Dividends declared:
Common stock	(928)			(928)
Awards under LTIP	(2)			(2)
Ending balance at Mar. 31, 2019	150,699	422	12,071	138,206
Beginning balance at Dec. 31, 2018	146,598	422	11,948	134,228
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (losses) earnings	4,914
Ending balance at Jun. 30, 2019	150,108	423	12,497	137,188
Beginning balance at Mar. 31, 2019	150,699	422	12,071	138,206
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (losses) earnings	6			6
Stock-based compensation expense	74		74
Issuance of common shares for acquisition	392	1	391
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(39)		(39)
Dividends declared:
Common stock	(1,016)			(1,016)
Awards under LTIP	(8)			(8)
Ending balance at Jun. 30, 2019	150,108	423	12,497	137,188
Beginning balance at Dec. 31, 2019	151,641	423	12,778	138,440
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (losses) earnings	(11,427)			(11,427)
Stock-based compensation expense	134		134
Dividends declared:
Common stock	(1,016)			(1,016)
Awards under LTIP	(6)			(6)
Ending balance at Mar. 31, 2020	139,326	423	12,912	125,991
Beginning balance at Dec. 31, 2019	151,641	423	12,778	138,440
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (losses) earnings	(7,924)
Ending balance at Jun. 30, 2020	141,890	423	13,001	128,466
Beginning balance at Mar. 31, 2020	139,326	423	12,912	125,991
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (losses) earnings	3,503			3,503
Stock-based compensation expense	170		170
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(81)		(81)
Dividends declared:
Common stock	(1,018)			(1,018)
Awards under LTIP	(10)			(10)
Ending balance at Jun. 30, 2020	$ 141,890	$ 423	$ 13,001	$ 128,466