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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Net loss: $ (2,480) $ (880)
Other comprehensive income, net of tax:    
Prior service cost arising during the period   438
Amortization of loss included in net periodic cost 97  
Other comprehensive income, net of tax 97 438
Total comprehensive loss $ (2,383) $ (442)