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Accumulated Other Comprehensive Income ("AOCI") - Summary of Total Changes in AOCI by Component Net of Tax (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at January 1, 2013 $ (13,664)    
Other comprehensive income before reclassifications:      
Loss on foreign currency translation adjustment (8,457) 1,680 (7,460)
Gain on unfunded pension obligations 4,113 (2,670) (3,825)
Amounts reclassified from AOCI:      
Amortization of defined benefit pension actuarial loss 306    
Other comprehensive income (loss), net of tax (4,038) 3,375 (11,029)
Balance at December 31, 2013 (17,702) (13,664)  
Defined Benefit Pension Plan Activity [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at January 1, 2013 (6,324)    
Other comprehensive income before reclassifications:      
Loss on foreign currency translation adjustment 0    
Gain on unfunded pension obligations 4,113 (2,670) (3,825)
Amounts reclassified from AOCI:      
Amortization of defined benefit pension actuarial loss 306    
Other comprehensive income (loss), net of tax 4,419    
Balance at December 31, 2013 (1,905) (6,324)  
Currency Translation Adjustment [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance at January 1, 2013 (7,340)    
Other comprehensive income before reclassifications:      
Loss on foreign currency translation adjustment (8,457)    
Gain on unfunded pension obligations 0    
Amounts reclassified from AOCI:      
Amortization of defined benefit pension actuarial loss 0    
Other comprehensive income (loss), net of tax (8,457)    
Balance at December 31, 2013 $ (15,797)