Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets:
Accrued expenses	$ 429	$ 322
Deferred revenues	544	557
Capitalization of costs	1,390	1,661
Pension adjustment	2,342	2,921
Stock grant expense	2,046	2,211
State deferred taxes	194	0
Book deferred gains	2,297	1,034
Joint venture allocations	593	587
Provision for additional capitalized costs	699	699
Interest rate swap	921	1,769
Other	77	209
Total deferred income tax assets	11,532	11,970
Deferred income tax liabilities:
Deferred gains	1,321	490
Depreciation	3,722	3,533
Cost of sales allocations	872	872
Joint venture allocations	6,367	6,592
Capitalized stock compensation	958	0
Straight line rent	412	548
Prepaid expenses	399	340
State deferred taxes	190	383
Other	189	137
Total deferred income tax liabilities	14,430	12,895
Net deferred income tax (liability)	(2,898)	(925)
Allowance for deferred tax assets	0	0
Net deferred taxes	$ (2,898)	$ (925)