CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$ 53,090	$ 45,739	$ 141,766	$ 118,732
Direct operating costs	20,902	19,893	61,745	56,164
Transportation costs	10,568	7,257	24,091	14,577
Gross profit	21,620	18,589	55,930	47,991
Selling, general and administrative expenses	6,108	6,196	18,353	18,167
Operating income	15,512	12,393	37,577	29,824
Other income (expense):
Interest income	4	4	11	13
Interest expense	(208)	(231)	(651)	(659)
Foreign currency gain (loss)	683	1,605	(1,448)	1,775
Other	77	70	268	672
Total other income (expense)	556	1,448	(1,820)	1,801
Income before income taxes	16,068	13,841	35,757	31,625
Income tax expense	5,740	5,179	12,813	12,078
Net income	$ 10,328	$ 8,662	$ 22,944	$ 19,547
Earnings per share:
Basic (in dollars per share)	$ 0.56	$ 0.48	$ 1.25	$ 1.07
Diluted (in dollars per share)	$ 0.56	$ 0.47	$ 1.24	$ 1.07
Shares used in earnings per share calculation:
Basic (in shares)	18,459	18,236	18,395	18,228
Diluted (in shares)	18,533	18,270	18,475	18,262
Dividends paid per share (in dollars per share)	$ 0.18	$ 0.18	$ 0.36	$ 0.54