Consolidated Statements of Changes in Deficit (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Member Units	Accumulated Members' Deficit USD ($)	Accumulated Other Comprehensive Loss USD ($)
Balance at Dec. 31, 2010	$ (141,398)		$ (133,914)	$ (7,484)
Balance (in shares) at Dec. 31, 2010		132,174
Increase (Decrease) in Stockholders' Equity
Distributions to members	(626)		(626)
State of Connecticut members' withholding	(152)		(152)
Net income	4,988		4,988
Other comprehensive (loss)/income:
Pension and postretirement health liabilities	(5,202)			(5,202)
Foreign currency translation	(444)			(444)
Comprehensive income (loss)	(658)
Balance at Dec. 31, 2011	(142,834)		(129,704)	(13,130)
Balance (in shares) at Dec. 31, 2011		132,174
Increase (Decrease) in Stockholders' Equity
Common unit expense	17		17
State of Connecticut members' withholding	(704)		(704)
Net income	(6,858)		(6,858)
Other comprehensive (loss)/income:
Pension and postretirement health liabilities	(1,229)			(1,229)
Foreign currency translation	517			517
Comprehensive income (loss)	(7,570)
Balance at Dec. 31, 2012	(151,091)		(137,249)	(13,842)
Balance (in shares) at Dec. 31, 2012		132,174
Increase (Decrease) in Stockholders' Equity
Common unit expense	27		27
Distributions to members	(9,317)		(9,317)
State of Connecticut members' withholding	(408)		(408)
Write off of prepaid license	(1,056)		(1,056)
Repurchase of common units	(14,000)		(14,000)
Repurchase of common units (in shares)		(31,166.000)
Sale of common units	9,000		9,000
Sale of common units (in shares)		31,166.000
Net income	22,867		22,867
Other comprehensive (loss)/income:
Pension and postretirement health liabilities	6,391			6,391
Foreign currency translation	(1,889)			(1,889)
Comprehensive income (loss)	27,369
Balance at Dec. 31, 2013	$ (139,476)		$ (130,136)	$ (9,340)
Balance (in shares) at Dec. 31, 2013		132,174