Consolidated Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Cash provided by operating activities	$ 6,179	$ 6,333
Investing activities:
Capital expenditures for coal properties	(2,936)	(8,604)
Marketable securities		(1,215)
Cash used in investing activities	(2,936)	(9,819)
Financing activities:
Dividends	(1,194)
Cash used in financing activities	(1,194)
Increase (decrease) in cash and cash equivalents	2,049	(3,486)
Cash and cash equivalents, beginning of period	16,228	21,888
Cash and cash equivalents, end of period	$ 18,277	$ 18,402