Condensed Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows from Operating Activities:
Net income	$ 1,819	$ 326
Adjustments to reconcile the net income to cash flows from operating activities:
Depreciation	2,496	2,392
Non-cash component of Amtrak Agreement	(1,108)
Amortization of deferred grant and other income	(431)	(198)
Proceeds from deferred grant and other income	177
(Gains) from sale and disposal of property, equipment and easements	(181)	(1,921)
Deferred income tax benefit	(336)	807
Share-based compensation	65	113
Increase (decrease) in cash from:
Trade receivable	874	(789)
Materials and supplies	85	(82)
Prepaid expenses and other	(232)	(218)
Accounts payable and accrued expenses	(67)	308
Net cash flows from operating activities	3,161	738
Cash flows from Investing Activities:
Purchase of property and equipment	(3,166)	(6,715)
Proceeds from note receivable		75
Proceeds from sale of property, equipment and easements	208	1,921
Net cash flows used in investing activities	(2,958)	(4,719)
Cash Flows from Financing Activities:
Borrowings (payments) under line of credit		(500)
Proceeds from long term debt		4,000
Repayments of long term debt	(88)	(30)
Dividends paid	(584)	(584)
Proceeds from deferred grant and other	245
Issuance of common shares for stock options exercised and employee stock purchases	86	93
Net cash flows from financing activities	(341)	2,979
Increase (decrease) in Cash and Cash Equivalents	(138)	(1,002)
Cash and Cash Equivalents, Beginning of Period	3,943	1,517
Cash and Cash Equivalents, End of Period	3,805	515
Supplemental Disclosures:
Cash paid for interest	142	104
Property and equipment included in accounts payable and accrued expenses	$ 635	$ 391