EMPLOYEE BENEFIT PLANS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Requisite service period	1 year
Maximum years of service	30 years
Consecutive months of compensation	60 months
Maximum percentage of equity securities in any single industry (in hundredths)	25.00%
Maximum percentage of equity securities in any single corporation (in hundredths)	10.00%
Maximum percentage of fixed income securities by any issuer (in hundredths)	10.00%
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	$ 28,913,000		$ 25,645,000
Key Assumptions [Abstract]
Accumulated benefit obligations for pension plan	33,058,000		29,420,000
Key Assumptions [Abstract]
Health care cost trend rate assumed in 2012-2036 (in hundredths)	9.60%
Dental care cost trend rate assumed in 2012-2036 (in hundredths)	5.00%
Decrease health care cost trend rate in 2013 (in hundredths)	1.80%
Decrease health care cost trend rate in 2014 (in hundredths)	1.40%
Decrease health care cost trend rate in 2015-2016 (in hundredths)	0.20%
Defined Benefit Plan Assumed Health Care Cost Trend Rate Decrease In Year 2017-2023 (in hundredths)	0.10%
Minimum age limit for applicability of health and dental care cost trends	65
Summary of one percent change in the assumed health care cost trend rates [Abstract]
One percent increase in change in total service and interest cost components for the year ended December 31, 2012	48,000
One percent decrease in change in total service and interest cost components for the year ended December 31, 2012	(40,000)
One percent increase change in postretirement benefit obligation as of December 31, 2012	1,741,000
One percent decrease change in postretirement benefit obligation as of December 31, 2012	(1,440,000)
Chairman One [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Liability for future policy benefits of former chairman	822,000
Future policy benefits reserve	822,000		822,000
Chairman Two [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Liability for future policy benefits of former chairman	627,000
Future policy benefits reserve	457,000		433,000
Stock Incentive Plan [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Shares authorized under the plan (in shares)	400,000
Shares available to be issued under plan (in shares)	328,788
Union [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	3,195,000		3,548,000		3,526,000
MM&P [Member]
Multiemployer Plans [Line Items]
Percentage of total plan contributions (in hundredths)	80.00%
MM&P [Member] | CGL [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	1,039,000	[1]	1,029,000	[1]	1,004,000	[1]
Expiration Date, First	Sep. 30, 2025	[1]
Expiration Date, Last	Jun. 30, 2020	[1]
MM&P [Member] | SCI [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	298,000	[1]	280,000	[1]	279,000	[1]
Expiration Date	Jun. 30, 2027	[1]
MM&P [Member] | WSC [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	996,000		1,297,000		1,299,000
Surcharge Imposed	No
Expiration Date, First	Sep. 30, 2025
Expiration Date, Last	Sep. 30, 2025
MEBA [Member] | CGL [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	242,000	[2]	237,000	[2]	230,000	[2]
Expiration Date, First	Sep. 30, 2020	[2]
Expiration Date, Last	Jun. 30, 2020	[2]
MEBA [Member] | SCI [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	68,000	[2]	62,000	[2]	61,000	[2]
Expiration Date	Jun. 30, 2017	[2]
MEBA [Member] | WSC [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	311,000		408,000		413,000
Surcharge Imposed	No
Expiration Date	Sep. 30, 2020
ARA [Member] | CGL [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	52,000	[3]	51,000	[3]	49,000	[3]
Expiration Date, First	Sep. 30, 2015	[3]
Expiration Date, Last	Jun. 30, 2017	[3]
ARA [Member] | WSC [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	2,000		20,000		29,000
Surcharge Imposed	No
Expiration Date	. NaN, NaN	[4]
SPP [Member] | CGL [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	86,000	[5]	85,000	[5]	85,000	[5]
Expiration Date, First	Dec. 31, 2016	[5]
Expiration Date, Last	Jun. 30, 2017	[5]
SPP [Member] | SCI [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	20,000	[5]	18,000	[5]	17,000	[5]
Expiration Date	Jun. 30, 2017	[5]
SPP [Member] | WSC [Member]
Summary of multi-employer pension and other postretirement benefit plans [Abstract]
Contribution Amount	81,000		61,000		60,000
Surcharge Imposed	No
Expiration Date, First	Sep. 30, 2017
Expiration Date, Last	Dec. 31, 2016
Retirement Plan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	28,913,000		25,645,000		25,007,000
Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	32,496,000		27,473,000
Service Cost (Credit)	649,000		542,000		477,000
Interest cost	1,426,000		1,496,000		1,470,000
Actuarial Loss (Gain)	3,371,000		4,304,000
Benefits Paid and Expected Expenses	(1,325,000)		(1,319,000)
Medicare Part D Reimbursements	0		0
Benefit Obligation at End of Year	36,617,000		32,496,000		27,473,000
Change in Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	25,645,000		25,007,000
Actual Return on Plan Assets	2,994,000		731,000
Employer Contribution	1,600,000		1,226,000
Benefits Paid and Actual Expenses	(1,326,000)		(1,319,000)
Medicare Part D reimbursements	0		0
Fair Value of Plan Assets at End of Year	28,913,000		25,645,000		25,007,000
Funded Status	(7,704,000)		(6,851,000)
Key Assumptions [Abstract]
Discount Rate (in hundredths)	3.75%		4.50%
Rate of Compensation Increase (in hundredths)	4.50%		4.50%
Amount recognized in accumulated other comprehensive income (loss) [Abstract]
Prior Service Credit (Cost)	19,000		22,000
Net Loss	(13,054,000)		(11,467,000)
Change in Other Comprehensive Income (Loss)	(13,035,000)		(11,445,000)
Components of net periodic benefit cost [Abstract]
Service cost	649,000		542,000		477,000
Interest cost	1,426,000		1,496,000		1,470,000
Expected return on plan assets	(1,987,000)		(1,907,000)		(1,706,000)
Amortization of prior service cost	(3,000)		(3,000)		(3,000)
Amortization of Net Actuarial Loss	778,000		380,000		342,000
Net periodic benefit cost	863,000		508,000		580,000
Key Assumptions [Abstract]
Discount Rate (in hundredths)	4.50%		5.50%		6.00%
Expected Return on Plan Assets (in hundredths)	7.75%		7.75%		7.75%
Rate of Compensation Increase (in hundredths)	4.50%		4.50%		4.50%
Summary of expected future benefit payments [Abstract]
2013	1,561,000
2014	1,657,000
2015	1,669,000
2016	1,761,000
2017	1,798,000
2018-2022	10,605,000
Postretirement Benefits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0		0		0
Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	11,898,000		10,729,000
Service Cost (Credit)	(6,000)		41,000		76,000
Interest cost	471,000		565,000		586,000
Benefit Plan, Plan Amendments	1,318,000
Actuarial Loss (Gain)	(133,000)		1,060,000
Benefits Paid and Expected Expenses	(506,000)		(534,000)
Medicare Part D Reimbursements	41,000		37,000
Benefit Obligation at End of Year	13,083,000		11,898,000		10,729,000
Change in Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	0		0
Actual Return on Plan Assets	0		0
Employer Contribution	464,000		497,000
Benefits Paid and Actual Expenses	(505,000)		(534,000)
Medicare Part D reimbursements	41,000		37,000
Fair Value of Plan Assets at End of Year	0		0		0
Funded Status	(13,083,000)		(11,898,000)
Key Assumptions [Abstract]
Discount Rate (in hundredths)	3.75%		5.50%
Amount recognized in accumulated other comprehensive income (loss) [Abstract]
Prior Service Credit (Cost)	(1,288,000)		43,000
Net Loss	(4,253,000)		(4,587,000)
Change in Other Comprehensive Income (Loss)	(5,541,000)		(4,544,000)
Components of net periodic benefit cost [Abstract]
Service cost	(6,000)		41,000		76,000
Interest cost	471,000		565,000		586,000
Expected return on plan assets	0		0		0
Amortization of prior service cost	(12,000)		(11,000)		(11,000)
Amortization of Net Actuarial Loss	201,000		213,000		198,000
Net periodic benefit cost	654,000		808,000		849,000
Key Assumptions [Abstract]
Discount Rate (in hundredths)	3.75%		5.50%		6.00%
Summary of expected future benefit payments [Abstract]
2013	638,000
2014	656,000
2015	654,000
2016	661,000
2017	678,000
2018-2022	3,616,000
401(k) [Member]
Summary of expected future benefit payments [Abstract]
Annual contribution per employee percentage (in hundredths)	50.00%
Annual contribution per employee amount	2,000
Employer contribution amount	102,000		102,000		96,000
Cash Equivalents [Member] | Money Market Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	236,000		418,000
Equities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Actual plan asset allocations percentage (in hundredths)	70.00%		60.00%
Fair value of assets	20,245,000		15,425,000
Change in Plan Assets [Roll Forward]
Fair Value of Plan Assets at End of Year	20,245,000		15,425,000
Equities [Member] | Domestic Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	17,631,000		12,372,000
Equities [Member] | International Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	2,614,000		3,053,000
Fixed Income [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Actual plan asset allocations percentage (in hundredths)	30.00%		40.00%
Fair value of assets	8,668,000		10,220,000
Change in Plan Assets [Roll Forward]
Fair Value of Plan Assets at End of Year	8,668,000		10,220,000
Fixed Income [Member] | Taxable Fixed Income Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	8,432,000		9,802,000
Level 1 Inputs [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	28,913,000		25,645,000
Level 1 Inputs [Member] | Cash Equivalents [Member] | Money Market Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	236,000		418,000
Level 1 Inputs [Member] | Equities [Member] | Domestic Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	17,631,000		12,372,000
Level 1 Inputs [Member] | Equities [Member] | International Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	2,614,000		3,053,000
Level 1 Inputs [Member] | Fixed Income [Member] | Taxable Fixed Income Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	8,432,000		9,802,000
Level 2 Inputs [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 2 Inputs [Member] | Cash Equivalents [Member] | Money Market Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 2 Inputs [Member] | Equities [Member] | Domestic Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 2 Inputs [Member] | Equities [Member] | International Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 2 Inputs [Member] | Fixed Income [Member] | Taxable Fixed Income Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 3 Inputs [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 3 Inputs [Member] | Cash Equivalents [Member] | Money Market Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 3 Inputs [Member] | Equities [Member] | Domestic Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 3 Inputs [Member] | Equities [Member] | International Equity Mutual Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	0		0
Level 3 Inputs [Member] | Fixed Income [Member] | Taxable Fixed Income Funds [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Total Assets at Fair Value	$ 0		$ 0

[1] Masters, Mates & Pilots Pension Plan

[2] MEBA Pension Trust

[3] American Radio Association Pension Trust

[4] In full force and effect until otherwise noted

[5] Seafarers Pension Plan