Long-Term Debt (Details Narrative) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Feb. 06, 2019	Nov. 17, 2017
Capitalized interest	$ 385	$ 235
Prepayment penalty				$ 3,420
Riverfront permanent loan	$ 88,823			$ 88,789
Dock 79 EagleBank
Term			120 months
Riverfront permanent loan						$ 90,000
Interest rate						4.125%
Payment terms			During the first 48 months of the loan term, the Joint Venture will make monthly payments of interest only, and thereafter, make monthly payments of principal and interest in equal installments based upon a 30-year amortization period.
Wells Fargo Level I
Commitment fee	0.15%
Interest rate over LIBOR	1.00%
Wells Fargo Level II
Commitment fee	0.20%
Interest rate over LIBOR	1.25%
Wells Fargo Level III
Commitment fee	0.25%
Interest rate over LIBOR	1.50%
Wells Fargo Bank, N.A.
Term	5 years
Revolving Credit Agreement					$ 20,000
Letters of credit issued	$ 1,740
Borrowed under the revolver	0
Available for borrowing	18,260
Tangible net worth covenant	110,000
Available to pay dividends or repurchase stock	$ 209,000
Letter of credit fee	1.00%
Interest rate	3.48%
Covenant compliance	all