EARNINGS PER SHARE - Earnings per Share (Details) - USD ($)		3 Months Ended								12 Months Ended
	Dec. 27, 2018	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jan. 18, 2018	Dec. 27, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)		$ 1,222,000	$ 2,158,000	$ 1,394,000	$ 1,475,000	$ 350,000	$ 4,353,000	$ (21,490,000)	$ 11,315,000	$ 6,248,890	$ (5,471,462)
Less dividends expense:
Common stock dividends	$ 0									6,988,198	6,578,196
Preferred stock										491,764	3,528,588
Deemed dividend on preferred stock redemption										3,093,028	0
Dividends										10,572,990	10,106,784
Undistributed (deficit)										$ (4,324,100)	$ (15,578,246)
Incremental common shares attributable to dilutive effect of call options and warrants (in shares)											0
Weighted average number of shares of common stock outstanding (in shares)		23,688,251	23,687,664	23,687,664	23,687,664	23,687,664	23,687,273	23,683,164	23,392,387	23,687,812	23,613,636
XL Investments
Less dividends expense:
Common stock shares into which warrants may be converted (in shares)												3,753,492	3,753,492
Common Stock
Less dividends expense:
Distributed earnings (in dollars per share)										$ 0.30	$ 0.28
Undistributed earnings (deficit) (in dollars per share)										(0.19)	(0.66)
Total (in dollars per share)										0.11	(0.38)
Unvested Share Based Payment Awards
Less dividends expense:
Distributed earnings (in dollars per share)										0.30	0.28
Undistributed earnings (deficit) (in dollars per share)										0	0
Total (in dollars per share)										$ 0.30	$ 0.28