Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
ASSETS
Cash and Cash Equivalents	$ 11,435,000	$ 20,010,000
Restricted Cash	8,000,000	8,499,000
Accounts Receivable, Net of Allowance for Doubtful Accounts	29,343,000	30,417,000
Prepaid Expenses	6,465,000	8,493,000
Deferred Tax Asset	1,635,000	3,084,000
Other Current Assets	1,027,000	1,304,000
Notes Receivable	3,726,000	3,712,000
Material and Supplies Inventory	11,344,000	11,322,000
Total Current Assets	72,975,000	86,841,000
Investment in Unconsolidated Entities	20,571,000	14,818,000
Vessels, Property, and Other Equipment, at Cost:
Vessels	582,870,000	582,416,000
Building	1,352,000	1,211,000
Land	623,000	623,000
Leasehold Improvements	26,348,000	26,348,000
Construction in Progress	8,430,000	2,673,000
Furniture and Equipment	11,823,000	11,727,000
Property, Plant and Equipment Total, Gross	631,446,000	624,998,000
Less - Accumulated Depreciation	(182,455,000)	(175,106,000)
Net Vessels, Property, Plant and Equipment	448,991,000	449,892,000
Other Assets:
Deferred Charges, Net of Accumulated Amortization	26,728,000	29,309,000
Intangible Assets, Net of Accumulated Amortization	27,727,000	28,756,000
Due from Related Parties	1,972,000	1,974,000
Notes Receivable	26,858,000	27,659,000
Goodwill	2,735,000	2,735,000
Deferred Tax Asset	9,679,000	7,325,000
Other	4,518,000	7,383,000
Other Assets Total	100,217,000	105,141,000
TOTAL ASSETS	642,754,000	656,692,000
Current Liabilities:
Current Maturities of Long-Term Debt	19,559,000	19,213,000
Accounts Payable and Other Accrued Expenses	48,765,000	51,220,000
Total Current Liabilities	68,324,000	70,433,000
Long-Term Debt, Less Current Maturities	174,554,000	179,016,000
Other Long-Term Liabilities:
Lease Incentive Obligation	8,745,000	5,397,000
Other	60,357,000	65,306,000
TOTAL LIABILITIES	311,980,000	320,152,000
Stockholders' Equity:
Common Stock, $1.00 Par Value, 20,000,000 Shares Authorized, 7,252,820 and 7,248,250 Shares Outstanding at March 31, 2014 and December 31, 2013, Respectively	8,712,000	8,692,000
Additional Paid-In Capital	140,542,000	140,115,000
Retained Earnings	220,108,000	226,480,000
Treasury Stock, 1,388,066 Shares at March 31, 2014 and December 31, 2013	(25,403,000)	(25,403,000)
Accumulated Other Comprehensive Loss	(13,751,000)	(13,910,000)
TOTAL STOCKHOLDERS' EQUITY	330,774,000	336,540,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	642,754,000	656,692,000
9.50% Series A Preferred Stock [Member]
Stockholders' Equity:
Preferred Stock, $1.00 Par Value	250,000	250,000
9.00% Series B Preferred Stock [Member]
Stockholders' Equity:
Preferred Stock, $1.00 Par Value	$ 316,000	$ 316,000