Condensed Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Operating Revenues	$ 8,600	$ 9,516	$ 15,823	$ 16,777
Operating Expenses:
Maintenance of way and structures	1,255	1,229	2,798	2,762
Maintenance of equipment	961	945	2,058	1,707
Transportation	2,314	2,659	4,605	5,451
General and administrative	1,238	1,108	2,606	2,489
Depreciation	1,046	880	2,005	1,757
Taxes, other than income taxes	783	830	1,589	1,563
Car hire, net	333	525	720	908
Employee retirement plans	57	56	113	113
Track usage fees	383	179	638	219
Total Operating Expenses	8,370	8,411	17,132	16,969
Income (loss) from operations	230	1,105	(1,309)	(192)
Other income	40	103	49	110
Interest expense	25		30
Income (loss) from operations prior to income taxes	245	1,208	(1,290)	(82)
Provision for income taxes	60	435	(476)	(12)
Net Income (Loss)	185	773	(814)	(70)
Preferred Stock Dividends			3	3
Net Income (Loss) Attributable to Common Shareholders	$ 185	$ 773	$ (817)	$ (73)
Net Income (Loss) Per Common Share
Basic	$ 0.04	$ 0.16	$ (0.17)	$ (0.01)
Diluted	$ 0.04	$ 0.16	$ (0.17)	$ (0.01)
Weighted-Average Common Shares Outstanding:
For basic	4,866,593	4,860,863	4,865,223	4,859,990
For diluted	4,988,889	4,935,190	4,865,223	4,859,990