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Accumulated Other Comprehensive Income (Loss) - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss), Beginning Balance     $ (1,261) $ (2,273)
Other comprehensive income (loss)before reclassifications     41 196
Amounts reclassified from accumulated other comprehensive income (loss)     42 88
Other comprehensive income 17 108 83 284
Accumulated other comprehensive income (loss), Ending Balance (1,178) (1,989) (1,178) (1,989)
Pension Liability Adjustment [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss), Beginning Balance     (1,275) (2,188)
Other comprehensive income (loss)before reclassifications     73  
Amounts reclassified from accumulated other comprehensive income (loss)     55 129
Other comprehensive income     128 129
Accumulated other comprehensive income (loss), Ending Balance (1,147) (2,059) (1,147) (2,059)
Deferred Gain on Cash Flow Derivatives [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss), Beginning Balance     14 (85)
Other comprehensive income (loss)before reclassifications     (32) 196
Amounts reclassified from accumulated other comprehensive income (loss)     (13) (41)
Other comprehensive income     (45) 155
Accumulated other comprehensive income (loss), Ending Balance $ (31) $ 70 $ (31) $ 70