Unaudited Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenue	$ 119,600	$ 96,888
Costs and expenses:
Direct operating expenses	56,299	53,137
Drydock expense	7,211	8,560
General and administrative expenses	14,489	10,950
Depreciation and amortization	18,357	15,170
Total costs and expenses	96,356	87,817
Operating income	23,244	9,071
Other income (expense):
Interest expense	(6,740)	(6,381)
Interest income	15	57
Foreign currency gain and other	936	513
Total other expense	(5,789)	(5,811)
Income before income taxes	17,455	3,260
Income tax expense	(898)	(389)
Net income	$ 16,557	$ 2,871
Net income per share:
Basic (in Dollars per share)	$ 0.63	$ 0.11
Diluted (in Dollars per share)	$ 0.63	$ 0.11
Weighted average shares outstanding:
Basic (in Shares)	26,352	26,043
Diluted (in Shares)	26,359	26,051
Cash dividend declared per common share (in Dollars per share)	$ 0.25	$ 0.25